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drjake wrote:
by the looks of it, has pushed me to the limit
Are you getting compile errors? If so post them.
"No matter where you go, there your are." - Buckaroo Banzai
-pete
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Oh, no, I'm not getting any compiler errors... all is working surprisingly well with my program. Although, due to me using switch case statements I've had to modify my coding so that sub-menus worked. After the program works out a question asked, it returns to main(). The main menu has 7 choices:
1. Areas
2. Volumes
3. Conversions
4. Percentages
5. Geometry (Angles)
6. Density and Speed
7. Basic maths
Each choice has a sub-menu allowing more options to the user:
Areas
--Rectangles
--Triangles
--Parallelograms
--Trapeziums
--Circles
Volumes
--Cuboids
--Prisms
Conversions
--Hours to minutes
--Pounds to Dollars
Percentages
--Type 1 (These are identified by the \"%\" symbol in the question)
--Type 2 (These are identified by the word \"percentage\" in the question)
--Type 3 (These are identified by them NOT giving you the \"original value\")
Geometry (Angles)
--Triangles
--Straight lines
--4-sided shapes
--Round points
--Exterior angles of triangles
--Isosceles triangles
--Parallel lines
Density and Speed
--Density = Mass / Volume
--Speed = Distance / Time
As you can see, quite a menu that is! lol I'd like to prove that someone with just over 1 weeks experience can do a useful C++ created tool! I've quickly learned that switch case within switch case... and so on, can be quite confusing! lol
drjake
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I suggest you take a step back and re-think your design, now that you have some expirence. I suspect from your description that you have made some mistakes in design.
In programing we often say plan to throw one away, and you have just hit one good reason: until you have something close to working you really don't know what pitfalls you need to design around. Expirence will help, but the only way to get it is to do it wrong.
Without seeing your code I cannot say where (or even if!) you went wrong. However I can tell you that menu driven apps normally do not have excessive variables in one method.
Remember, GUI/MFC apps do not do anything that you cannot do with a command line menu. While you don't want all the complexity those systems provide, learning a little about how they solve your problem can help you figure out how to solve it.
As for your switch in a switch: generally that is a good place for a function call, if you haven't done that already.
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There are limits to the number of symbols (variables, types, and function names) you can declare, but I doubt very much that you'll encounter it.
/ravi
My new year's resolution: 2048 x 1536
Home | Articles | Freeware | Music
ravib@ravib.com
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Hello ,
We are trying to access some functions written in our
"SAP R-3 system" using a remote function call. SAP R-3 also generates C Code which we can use to compile interfaces that can test these functions. The text file that comes as a help file when we generate code says that it is meant for generating executable. It however mentions nothing about the code being generated not being fit for using as a dll.
I generated C Code for one such function and then made an .exe project using Visual C++ and tested it and it seems to work fine just as the documentation claims.
However when I use the same code to create a Visual C++ dll projet everything works and I get to the point of making the dll. But when I register the .dll file using REGSVR32 I get an error that reads
"the dll was loaded but the DLL Server Register Entry point was not found."
I do not know, what is it that I am doing wrong here.
Or rather my question would be
1). What special things need to be added or removed or taken care of in my C Code when I am trying to compile it into a DLL
2). I am attaching the code below, that I am using to compile into a DLL. Please feel free to have a look and tell me if there is something you feel that's causing the
trouble.
Any help with this is deeply appreciated.
Regards ,
Pradhip.S
-----------------------------------------------------------
// Code generated by SAP and Visual C++ together.
// SAPCConnect.cpp : Defines the entry point for the DLL application.
//
#include "stdafx.h"
#include "saprfccl.h"
#if !defined(SAPonWINDOWS) && !defined(SAPonNT)
#define __min(a,b) (((a)<(b))?(a):(b))
#define OUT(text,pos) printf("%*.0s",pos,text); printf("%s\n",text); if (outfile!=NULL) fprintf(outfile,"=%s\n",text)
#endif
#define NL printf("\n")
BOOL APIENTRY DllMain( HANDLE hModule,
DWORD ul_reason_for_call,
LPVOID lpReserved
)
{
return TRUE;
}
/*
------------------------------------------------------------------------
SAP AG - R/3 Remote Function Call Interface Generation
RFC_ANSIC_CL_EXP EN 46C
07/19/2004 20:49
Complete ANSI C client example
saprfccl.c
------------------------------------------------------------------------
*/
static FILE *infile,*outfile,*logfile;
void LOG(const RFC_HANDLE hRfc, const char *text,const char *str)
{ if (logfile!=NULL) { fprintf(logfile,"%d %s %s\n",hRfc,text,str); fflush(logfile); } }
typedef void (WIN_DLL_EXPORT_FLAGS * RFC_HELP)(const char *topic, const char *subtopic, const char *text);
static RFC_HELP rfc_help;
void WIN_DLL_EXPORT_FLAGS hlp_y_sd_coa_shipinfo_down(const char *topic, const char *subtopic, const char *text);
void help(const char *topic, const char *subtopic, const char *text)
{
/* general help */
if (strcmp(topic,"h")==0) {
OUT("This is a client example programm for SAP Remote Function Call.",6);
OUT("The program was generated by the R/3 RFC Interface Generator.",6);
OUT("For further information about the example see saprfc cl.txt.",6);
OUT("To get help using the example, answer '?' on any item.",6);
OUT("The example has been generated for function module:",6); NL;
OUT("- Y_SD_COA_SHIPINFO_DOWN",8);
OUT(" Lieferinfo an Versandsubsystem.",8); NL; }
/* program arguments help */
if (strcmp(topic,"l")==0) {
OUT("To logon answer 'y' and type in destination, client, user etc.",6);
OUT("Otherwise perform logon using following program arguments:",6); NL;
OUT("-d <destination>",8);
OUT("-c <client>",8);
OUT("-u <user>",8);
OUT("-p <password>",8);
OUT("-l <language>",8);
OUT("-2 R/2 connection",8);
OUT("-3 R/3 connection",8);
OUT("-h <hostname>",8);
OUT("-s <system number="">",8);
OUT("-g <gateway host="">",8);
OUT("-x <gateway service="">",8);
OUT("-t trace",8);
OUT("-i <filename> input from file",8);
OUT("-o <filename> output to file",8);
OUT("-log <filename> log events file",8);
OUT("-? this text",8); NL; }
/* logon help */
if (strcmp(topic,"li")==0) {
if (strcmp(subtopic,"destination")==0) {
OUT("name of the R/3 or R/2 system, e.g 'C11'.",8); NL; }
if (strcmp(subtopic,"client")==0) {
OUT("R/3 or R/2 client number, e.g. '000'.",8); NL; }
if (strcmp(subtopic,"user")==0) {
OUT("R/3 user or R/2 CPI-C user.",8); NL; }
if (strcmp(subtopic,"password")==0) {
OUT("R/3 password or R/2 CPI-C password.",8); NL; }
if (strcmp(subtopic,"language")==0) {
OUT("system language of the R/3 or R/2 system, e.g. 'E'.",8); NL; }
if (strcmp(subtopic,"mode")==0) {
OUT("determines R/3 or R/2 connection.",8); NL; }
if (strcmp(subtopic,"hostname")==0) {
OUT("hostname of the R/3 application server, e.g. 'hs0000'.",8); NL; }
if (strcmp(subtopic,"system number")==0) {
OUT("system number of the R/3 System, e.g. '00'.",8); NL; }
if (strcmp(subtopic,"gateway host")==0) {
OUT("hostname of the R/3 or R/2 gateway, e.g. 'is0000'.",8); NL; }
if (strcmp(subtopic,"gateway service")==0) {
OUT("name of the R/3 or R/2 gateway service, e.g. 'sapgw00'",8); NL; }
if (strcmp(subtopic,"trace")==0) {
OUT("trace written to 'dev_rfc'.",8); NL; } }
/* input help */
if (strcmp(topic,"i")==0) {
OUT("To input function module parameters, answer 'y' and type in",6);
OUT("parameter values and append table rows if necessary.",6); NL; }
if ((strcmp(topic,"isi")==0)||(strcmp(topic,"esi")==0)) {
OUT("To fill in the structure, answer 'y' and type in structure fields.",10); NL; }
if ((strcmp(topic,"iso")==0)||(strcmp(topic,"eso")==0)) {
OUT("To display the structure fields, answer 'y'.",10); NL; }
if (strcmp(topic,"ti")==0) {
OUT("To append a table row, answer 'y' and type in table row fields.",10); NL; }
if (strcmp(topic,"to")==0) {
OUT("To get the table row and display the row fields, answer 'y' or '*' for all rows.",10); NL; }
if (strcmp(topic,"xi")==0) {
OUT("Terminates the function. To raise the exception, answer 'y'.",10); NL; }
if (strcmp(topic,"xo")==0) {
OUT("Terminated the called function.",10); NL; }
if (strcmp(topic,"c")==0) {
OUT("To call the function module, answer 'y'.",6); NL; }
if (strcmp(topic,"a")==0) {
OUT("To call the function module again, answer 'y'.",6); NL; }
/* end info */
if (strcmp(topic,"end")==0) {
OUT("Thank you for using the SAP Business Application Programming Interface",2);
OUT("and SAP Remote Function Call.",2); NL; }
if (rfc_help!=NULL) rfc_help(topic, subtopic, text);
}
void INS(const char *topic,const char *subtopic,const char *text,const unsigned pos,const unsigned len,char *str)
{
int c=0;
do { printf("%*.0s",pos,text); printf("%-*s : ",len,text);
if (infile!=NULL) { /* read from input file comparing input event (text) */
do { c=getc(infile); if (c==EOF) { OUT("error reading input file",0); exit(1); }
fgets(str,1024,infile); *(str+strlen(str)-1) = '\0'; } while ((c!='=')||(strcmp(text,str)!=0));
c=getc(infile); if (c==EOF) { OUT("error reading input file",0); exit(1); }
fgets(str,1024,infile); *(str+strlen(str)-1) = '\0'; printf("%s\n",str); } /* cut CR/LF and stdout */
else
gets(str); /* read from stdin */
if (outfile!=NULL) fprintf(outfile,"=%s\n<%s\n",text,str); /* write output file */
if (str[0]=='?') help(topic,subtopic,text); } while (str[0]=='?');
return;
}
void OUTS(const char *text,const unsigned pos,const unsigned len,char *str)
{
printf("%*.0s",pos,text); printf("%-*s : %s\n",len,text,str);
if (outfile!=NULL) fprintf(outfile,"=%s\n>%s\n",text,str);
return;
}
#define SETCHAR(var,str) memcpy(var,str,__min(strlen(str),sizeof(var))); \
if (sizeof(var)>strlen(str)) memset(var+strlen(str),' ',sizeof(var)-strlen(str))
#define GETCHAR(var,str) sprintf(str,"%.*s",sizeof(var),var)
#define SETDATE(var,str) memcpy(var,str,__min(strlen(str),sizeof(var))); \
if (sizeof(var)>strlen(str)) memset(var+strlen(str),'0',sizeof(var)-strlen(str))
#define GETDATE(var,str) sprintf(str,"%.*s",sizeof(var),var)
#define SETFLOAT(var,str) *var=atof(str);
#define GETFLOAT(var,str) sprintf(str,"%f",var);
#define SETINT(var,str) *var=atol(str);
#define GETINT(var,str) sprintf(str,"%ld",var);
#define SETNUM(var,str) memcpy(var+(sizeof(var)-__min(strlen(str),sizeof (var))),str,__min(strlen(str),sizeof(var))); \
if (sizeof(var)>strlen(str)) memset(var,'0',sizeof(var)-strlen(str))
#define GETNUM(var,str) sprintf(str,"%.*s",sizeof(var),var)
#define SETTIME(var,str) memcpy(var,str,__min(strlen(str),sizeof(var))); \
if (sizeof(var)>strlen(str)) memset(var+strlen(str),'0',sizeof(var)-strlen(str))
#define GETTIME(var,str) sprintf(str,"%.*s",sizeof(var),var)
#define SETINT1(var,str) *var=atoi(str);
#define GETINT1(var,str) sprintf(str,"%hu",var);
#define SETINT2(var,str) *var=atoi(str);
#define GETINT2(var,str) sprintf(str,"%d",var);
#define SETBYTE(var,str) str2nbyte(str,var,sizeof(var))
#define GETBYTE(var,str) nbyte2str(str,var,sizeof(var))
void str2nbyte(char *str,unsigned char *byte,size_t size)
{
/* convert string to byte, e.g. str "818283" to byte 'abc' */
size_t c; char tmp[1024]; int i;
strcpy(tmp,str); for (c=0;c<strlen(tmp);++c) tmp[c]="toupper(tmp[c]);
" for="" (c="strlen(tmp);c<(size<<1);c++)" ;
="" {="" sscanf(&="" tmp[c<<1],"%2x",&="" i);="" byte[c]="i;" }
}
void="" nbyte2str(char="" *str,unsigned="" char="" *byte,size_t="" size)
{
="" *="" convert="" byte="" to="" string,="" e.g.="" 'abc'="" str="" "818283"=""
="" size_t="" c;
="" (="" c="0;" c<size;="" c++="" )="" sprintf(="" &str[c<<1],="" "%02x",="" );
="" str[size<<1]="0;
}
#define" setbcd(var,str,dec)="" str2nbcd(str,var,sizeof(var),dec)
#define="" getbcd(var,str,dec)="" nbcd2str(str,var,sizeof(var),dec)
void="" str2nbcd(char="" *bcd,size_t="" size,="" int="" decimals)
{
="" string="" bcd,="" "+012.3"="" bcd="" '01230c'="" length="" 3="" decimals="" 2="" s[1024],*p;="" c,="" strs="size<<1;
" if="" (str[0]="='-')" {s[strs-1]="D" ;="" str++;}
="" else="" (p="strchr(str,'.'))" *(p++)="0;" p="str+strlen(str);
" (strlen(str)="">c) memcpy(s,str+strlen(str)-c,c);
else {memset(s,'0',c-strlen(str)); memcpy(s+c-strlen(str),str,strlen(str));}
while((*p) && (c < strs-1)) s[c++]=*(p++);
while(c < strs-1) s[c++]='0';
str2nbyte(s,bcd,size);
}
void nbcd2str(char *str,unsigned char *bcd,size_t size,int decimals)
{
/* convert bcd to string, e.g. bcd '01230C' length 3 decimals 2 to str "+012.30" */
char s[1024]; size_t c, strs=size<<1;
nbyte2str(s,bcd,size);
if (s[strs-1]=='D') *(str++)='-'; else *(str++)='+';
for(c=0;c<strs-decimals-1;c++) *(str++)="s[c];
" if="" (decimals="">0) { *(str++)='.'; while (c<strs-1) *(str++)="s[c++];}
" *str="0;
}
static" char*="" str2upper(char="" *str)
{
="" unsigned="" i;
="" for="" (i="0;i<strlen(str);++i)" str[i]="toupper(str[i]);
" return="" str;
}
#ifdef="" saponwindows
#include="" <graph.h="">
static void getpassword(char *password,int length)
{
short activeChild;
int i = 0 ;
if (infile!=NULL) { INS("li","password","password",6,35,password); return; }
printf("%6.0s",""); printf("%-35s : ","password"); activeChild = _wggetactive();
if (activeChild != -1) _wgclose(activeChild);
activeChild = _wgopen("Logon"); _wgsetactive(activeChild); _outtext("password : ");
while ((*password++ = (char) _inchar()) != '\r') { if (i++ >= length - 1) break; }
*(--password) = 0; _wgclose (activeChild);
if (password[-i]=='?') printf("?\n"); else if (password[-i]==0) printf("\n"); else printf("*\n");
if (outfile!=NULL) { fprintf(outfile,"=%s\n","password"); if (password[-i]=='?') fprintf(outfile," 0) strncpy(lDestination,str2upper(s),3);
INS("li","client","client [101]",6,35,s);
if (strlen(s) > 0) strncpy(lClient,s,3);
do { INS("li","user","user",6,35,s); } while (s[0]==0);
if (strlen(s) > 0) strncpy(lUser,str2upper(s),12);
do { getpassword(s,sizeof(s)); if (s[0]=='?') help("li","password",""); } while ((s[0]=='?')||(s[0]==0));
if (strlen(s) > 0) strncpy(lPassword,str2upper(s),10);
INS("li","language","language [EN]",6,35,s);
if (strlen(s) > 0) strncpy(lLanguage,str2upper(s),1);
INS("li","mode","mode [R/3]/R/2",6,35,s);
if (strlen(s) > 0) strncpy(lMode,s,3);
if (strcmp(lMode,"R/2")==0) {
do { INS("li","gateway host","gateway host [clr3e10 ]",6,35,s); } while (s[0]==0);
if (strlen(s) > 0) strncpy(lGwhost,s,30);
do { INS("li","gateway service","gateway service [sapgw10 ]",6,35,s); } while (s[0]==0);
if (strlen(s) > 0) strncpy(lGwservice,s,30); }
else {
INS("li","hostname","hostname [clr3e10]",6,35,s);
if (strlen(s) > 0) strncpy(lHostname,s,30);
INS("li","system number","system number [10]",6,35,s);
if (strlen(s) > 0) strncpy(lSysnr,s,2);
INS("li","gateway host","gateway host [clr3e10]",6,35,s);
if (strlen(s) > 0) strncpy(lGwhost,s,30);
INS("li","gateway service","gateway service [sapgw10 ]",6,35,s);
if (strlen(s) > 0) strncpy(lGwservice,s,30); }
INS("li","trace","trace on/[off]",6,35,s);
if (strlen(s) > 0) strncpy(lTrace,s,3); NL;
/* logon settings */
RfcOptions->destination = lDestination;
RfcOptions->client = lClient;
RfcOptions->user = lUser;
RfcOptions->password = lPassword;
RfcOptions->language = lLanguage;
if (strcmp (lMode,"R/2")==0) {
RfcOptions->mode = RFC_MODE_CPIC;
if (lGwhost[0] == 0) RfcConnoptCpic->gateway_host = NULL;
else RfcConnoptCpic->gateway_host = lGwhost;
if (lGwservice[0] == 0) RfcConnoptCpic->gateway_service = NULL;
else RfcConnoptCpic->gateway_service = lGwservice;
RfcOptions->connopt = RfcConnoptCpic; }
else {
RfcOptions->mode = RFC_MODE_R3ONLY;
if (lHostname[0] == 0) RfcConnoptR3only->hostname = NULL;
else RfcConnoptR3only->hostname = lHostname;
if (lSysnr[0] != 0) RfcConnoptR3only->sysnr = atoi(lSysnr);
if (lGwhost[0] == 0) RfcConnoptR3only->gateway_host = NULL;
else RfcConnoptR3only->gateway_host = lGwhost;
if (lGwservice[0] == 0) RfcConnoptR3only->gateway_service = NULL;
else RfcConnoptR3only->gateway_service = lGwservice;
RfcOptions->connopt = RfcConnoptR3only; }
if ((0 == strcmp(lTrace,"on"))||(0==strcmp(lTrace,"ON"))) RfcOptions->trace = 3;
else RfcOptions->trace = 0;
/* open connection */
OUT("Opening...",4); NL; hRfc = RfcOpen(RfcOptions); LOG(hRfc,"RfcOpen called","");
return hRfc;
}
void WIN_DLL_EXPORT_FLAGS rfc_error(char *operation)
{
#ifdef SAPonNT
char s[16];
#endif
RFC_ERROR_INFO RfcErrorInfo;
OUT("RFC error",0);
OUTS("operation/code",0,15,operation);
memset(&RfcErrorInfo,0,sizeof(RfcErrorInfo));
RfcLastError(&RfcErrorInfo);
OUTS("key",0,15,RfcErrorInfo.key);
OUTS("status",0,15,RfcErrorInfo.status);
OUTS("message",0,15,RfcErrorInfo.message);
OUTS("internal status",0,15,RfcErrorInfo.intstat); NL;
RfcClose (RFC_HANDLE_NULL);
#ifdef SAPonNT
INS("","","Quit? [y]",4,24,s);
#endif
exit(1);
}
/*
------------------------------------------------------------------------
Call function Y_SD_COA_SHIPINFO_DOWN
exporting
IN_VBELN structure VBELN length 10 number of fields 1
importing
OUT_SHIPREC structure YSD_COASHP length 475 number of fields 34
tables
exceptions
------------------------------------------------------------------------
*/
RFC_RC WIN_DLL_EXPORT_FLAGS y_sd_coa_shipinfo_down(RFC_HANDLE hRfc
,VBELN *eInVbeln
,YSD_COASHP *iOutShiprec
,char *xException)
{
/* RFC variables */
RFC_PARAMETER Exporting[2];
RFC_PARAMETER Importing[2];
RFC_TABLE Tables[1];
RFC_RC RfcRc;
char *RfcException = NULL;
/* install structures */
if (handleOfVBELN==0) {
RfcRc = RfcInstallStructure("VBELN",
typeOfVBELN,
ENTRIES(typeOfVBELN),
&handleOfVBELN);
if (RfcRc != RFC_OK) rfc_error("RfcInstallStructure"); }
if (handleOfYSD_COASHP==0) {
RfcRc = RfcInstallStructure("YSD_COASHP",
typeOfYSD_COASHP,
ENTRIES(typeOfYSD_COASHP),
&handleOfYSD_COASHP);
if (RfcRc != RFC_OK) rfc_error("RfcInstallStructure"); }
/* define export params */
Exporting[0].name = "IN_VBELN";
Exporting[0].nlen = 8;
Exporting[0].type = handleOfVBELN;
Exporting[0].leng = sizeof(VBELN);
Exporting[0].addr = eInVbeln;
Exporting[1].name = NULL;
Tables[0].name = NULL;
/* call function module */
RfcRc = RfcCall(hRfc,"Y_SD_COA_SHIPINFO_DOWN",Exporting,Tables);
LOG(hRfc,"RfcCall called","");
switch (RfcRc) {
case RFC_OK :
/* define import params */
Importing[0].name = "OUT_SHIPREC";
Importing[0].nlen = 11;
Importing[0].type = handleOfYSD_COASHP;
Importing[0].leng = sizeof(YSD_COASHP);
Importing[0].addr = iOutShiprec;
Importing[1].name = NULL;
/* receive results */
RfcRc = RfcReceive(hRfc,Importing,Tables,&RfcException);
LOG(hRfc,"RfcReceive called","");
switch (RfcRc) {
case RFC_SYS_EXCEPTION : strcpy(xException,RfcException);
case RFC_EXCEPTION : strcpy(xException,RfcException); }
}
return RfcRc;
}
RFC_RC WIN_DLL_EXPORT_FLAGS cll_y_sd_coa_shipinfo_down(RFC_HANDLE hRfc)
{
/*
---------------------------------------------------
begin of caller example code
replace the example code with your code
---------------------------------------------------
*/
/* RFC variables */
static RFC_RC RfcRc;
char s[1024];
/* param variables */
VBELN eInVbeln;
YSD_COASHP iOutShiprec;
char xException[256];
char x[276];
help("f", "", "");
INS("i","","Input? [y]/n",4,24,s); NL;
while ((s[0]!='n') && (s[0]!='N')) {
/* init export parameters */
SETCHAR(eInVbeln.Vbeln,"");
/* input export parameters */
OUT("exporting",6);
OUT("IN_VBELN",8); NL;
do { INS("esi","IN_VBELN","Fill structure? y/n",4,24,s); } while (s[0]==0); NL;
if ((s[0]=='y')||(s[0]=='Y')) {
INS("esfi","IN_VBELN","VBELN",10,30,s); SETCHAR(eInVbeln.Vbeln,s);
OUT("IN_VBELN",8); NL; }
INS("c","","Call? [y]/n",4,24,s); NL;
if ((s[0]!='n') && (s[0]!='N')) { OUT("Calling...",4); NL;
/* call RFC function */
RfcRc = y_sd_coa_shipinfo_down(hRfc
,&eInVbeln
,&iOutShiprec
,xException);
switch (RfcRc) {
case RFC_OK :
/* display importing parameters */
OUT("importing",6);
OUT("OUT_SHIPREC",8); NL;
INS("iso","OUT_SHIPREC","Display structure? [y]/n",4,24,s); NL;
if ((s[0] != 'n')&&(s[0] != 'N')) {
GETCHAR(iOutShiprec.Yyshipno,s);
OUTS("YYSHIPNO",10,30,s);
GETCHAR(iOutShiprec.Yyship1,s);
OUTS("YYSHIP1",10,30,s);
GETCHAR(iOutShiprec.Yyship2,s);
OUTS("YYSHIP2",10,30,s);
GETCHAR(iOutShiprec.Yyship3,s);
OUTS("YYSHIP3",10,30,s);
GETCHAR(iOutShiprec.Yyship4,s);
OUTS("YYSHIP4",10,30,s);
GETCHAR(iOutShiprec.Yyship5,s);
OUTS("YYSHIP5",10,30,s);
GETCHAR(iOutShiprec.Yyship6,s);
OUTS("YYSHIP6",10,30,s);
GETCHAR(iOutShiprec.Yycarcod,s);
OUTS("YYCARCOD",10,30,s);
GETBCD(iOutShiprec.Yycomlbs,s, 2);
OUTS("YYCOMLBS",10,30,s);
GETBCD(iOutShiprec.Yycodfee,s, 2);
OUTS("YYCODFEE",10,30,s);
GETBCD(iOutShiprec.Yycodto,s, 2);
OUTS("YYCODTO",10,30,s);
GETBCD(iOutShiprec.Yyvarlbs,s, 2);
OUTS("YYVARLBS",10,30,s);
GETCHAR(iOutShiprec.Yynull01,s);
OUTS("YYNULL01",10,30,s);
GETNUM(iOutShiprec.Yyphone,s);
OUTS("YYPHONE",10,30,s);
GETCHAR(iOutShiprec.Yypickby,s);
OUTS("YYPICKBY",10,30,s);
GETCHAR(iOutShiprec.Yypackby,s);
OUTS("YYPACKBY",10,30,s);
GETCHAR(iOutShiprec.Yysentby,s);
OUTS("YYSENTBY",10,30,s);
GETCHAR(iOutShiprec.Yyautinv,s);
OUTS("YYAUTINV",10,30,s);
GETCHAR(iOutShiprec.Yynull02,s);
OUTS("YYNULL02",10,30,s);
GETDATE(iOutShiprec.Yyshipdt,s);
OUTS("YYSHIPDT",10,30,s);
GETCHAR(iOutShiprec.Yyswtrk,s);
OUTS("YYSWTRK",10,30,s);
GETDATE(iOutShiprec.Yyspdate,s);
OUTS("YYSPDATE",10,30,s);
GETTIME(iOutShiprec.Yysptime,s);
OUTS("YYSPTIME",10,30,s);
GETDATE(iOutShiprec.Yyinvdat,s);
OUTS("YYINVDAT",10,30,s);
GETCHAR(iOutShiprec.Yyinvno,s);
OUTS("YYINVNO",10,30,s);
GETCHAR(iOutShiprec.Yyproces,s);
OUTS("YYPROCES",10,30,s);
GETBCD(iOutShiprec.Yycrdfee,s, 2);
OUTS("YYCRDFEE",10,30,s);
GETCHAR(iOutShiprec.Yyshpwo,s);
OUTS("YYSHPWO",10,30,s);
GETCHAR(iOutShiprec.Yyshpws,s);
OUTS("YYSHPWS",10,30,s);
GETCHAR(iOutShiprec.Yyshpwcc,s);
OUTS("YYSHPWCC",10,30,s);
GETCHAR(iOutShiprec.Yybillto,s);
OUTS("YYBILLTO",10,30,s);
GETCHAR(iOutShiprec.Yydlrpo,s);
OUTS("YYDLRPO",10,30,s);
GETCHAR(iOutShiprec.Yymoney,s);
OUTS("YYMONEY",10,30,s);
GETCHAR(iOutShiprec.Yydlrcod,s);
OUTS("YYDLRCOD",10,30,s);
OUT("OUT_SHIPREC",8); NL; }
break;
case RFC_EXCEPTION :
/* exception raised */
OUT("exception",6);
do { sprintf(x,"%s raised. Help? ?/[n]",xException); INS("xo",xException,x,8,42,s); } while (s[0]=='?'); NL;
break;
case RFC_SYS_EXCEPTION : rfc_error("system exception raised");
case RFC_FAILURE : rfc_error("failure");
default : rfc_error("other failure");
}
}
do { INS("a","","Again? y/n",4,24,s); } while (s[0]==0); NL;
}
/*
---------------------------------------------------
end of caller example code
---------------------------------------------------
*/
return RfcRc;
}
/*
------------------------------------------------------------------------
main program
------------------------------------------------------------------------
*/
main(int argc, char **argv)
{
/* RFC variables */
static RFC_OPTIONS RfcOptions;
static RFC_CONNOPT_CPIC RfcConnoptCpic;
static RFC_CONNOPT_R3ONLY RfcConnoptR3only;
static RFC_ENV RfcEnv;
static RFC_HANDLE hRfc;
static RFC_RC RfcRc;
static char d;
char s[1024];
int count;
/* program arguments */
outfile = NULL; infile = NULL; logfile = NULL;
for (count=0;count
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first, a polite criticism: nobody is ever going to look at that much code.
anyway, unless you are writing a COM server DLL, you don't need to use RegSvr32 to "register" it.
specifically, RegSvr32 loads your DLL and tried to call a function called "RegisterServer" in your DLL; RegisterServer usually sets up a bunch of registry stuff that lets COM know what your DLL does. but, if you're not writing a COM server DLL, there's no need to have a RegisterServer function and no need to use RegSvr32.
-c
Software | Cleek
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Hi ! Here is my software.
I have a main worker thread which is the Test Plan.
This worker thread create other sub-worker threads as Test Case. Everything work fine but I have problems with the refresh of my view. My threads (almost all the software) is part of a document (I use doc-view architecture of MFC).
I use icones to show if the test succeed or fail and also other pictograms.
Anyway, I WANT TO REFRESH MY SCREEN WITH UpdateAllViews() which call in some way the OnDraw function).
I have ASSERT fail because it is likely that I have passed a C++ object from one thread to another. I don't really understand the explanation associated in the Wincore.CPP file.
How I can refresh my screen (anytime, when I want) without having problem in a Multithread software ???
Thank you !
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One way is to use PostMessage(...).
UINT MyThread(LPVOID pParam)
{
CMyView *pView = (CMyView *)pParam;
pView->PostMessage(WM_MY_UPDATE_MESSAGE, wParam, lParam);
}
...
...
...
ON_MESSAGE(WM_MY_UPDATE_MESSAGE, OnMyUpdateMessage)
...
...
...
LRESULT CMyView::OnMyUpdateMessage(WPARAM wParam, LPARAM lParam)
{
UpdateAllViews();
}
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Hi,
I was using this code to read from text log files, and it all worked fine:
<br />
CFile log_file;<br />
CString log_line;<br />
log_file.Open(_T("file"),CFile::modeRead|CFile::shareDenyNone);<br />
CArchive ar (&log_file,CArchive::load);<br />
<br />
while (ar.ReadString (log_line))<br />
{<br />
}<br />
<br />
ar.Close<br />
file.Close<br />
What happens now, is that I use the same code,but within a thread, and from some reason, if I leave my application open (even when I am done reading the file), other applications can't delete the log files unless I close my app....
Any idea ?
Shay
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Check the thread. Does it every exit the loop?
Kuphryn
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yes it does, it even closes the file.
The thread posts a message to the GUI that it's done and it all works fine...
Any more ideas ?
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Hi,
I'm still new at all this, and have run into a bit of a problem when trying to print. My app contains a split window with a CView derived class on the left and a formview dialog with some controls on the right.
I'm trying to print the CView text. This works when i click on the left frame, and then go to my menubar -> file -> print.
However when the right frame control dialog has focus, I can't get it to print. I catch ID_FILE_PRINT in Mainfrm.cpp(onfileprint), then do a SendMessage(ID_FILE_PRINT) to the view window. but nothing happens.
Could someone explain what the difference is between using the file->print in the menu when the cview has focus, and sending it a ID_FILE_PRINT message?
thanks a million,
 Mike
"I bet Einstein turned himself all sorts of colors before he invented the light bulb." -- Homer J.
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See TN021[^] and TN022[^]
"You're obviously a superstar." - Christian Graus about me - 12 Feb '03
"Obviously ??? You're definitely a superstar!!!" mYkel - 21 Jun '04
Within you lies the power for good - Use it!
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 Ok I have just inherited a piece of C++ .NET code( i feel like a proud PAPA ).
This C++ .NET code in the form of assemblies that interface with another set of C# assemblies which are being called from a ASP.NET project. The problem is that when the ASP .NET project is executed..i can just see the resources on this process going from 72,000K to almost 154,000K in a hurry and progressively getting "worst".
So, my first thought is memory leak in the C++ assemblies. Here are the questions.
1. Can i use #define CRTDBG_MAP_ALLOC to debug memory leaks in dll's.
2. Technically according to MS I should put
_CrtSetDbgFlag ( _CRTDBG_ALLOC_MEM_DF | _CRTDBG_LEAK_CHECK_DF );
at the start of my program.
So, since it is a just a class library..where would the _CrtSetDbgFlag go.
thanks
Sameer
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If it is possible the best approach to developing components is to isolate them so that as much functionality as possible can be executed from a native environment. In this case that would be VC.NET C++ WinForms application.
In fact that is the method I have always used to develop components in C++. I use a desktop application project to develop all the main C++ classes that will be used in the components. Then you create a second project, COM, .NET Assembly, whatever and add the classes to it and wrap them in the desired interface(s). That way you can always go back to the developement project and execute the C++ code in isolation for testing things like memory leaks.
But, that's just my opinion... I could be wrong.
"No matter where you go, there your are." - Buckaroo Banzai
-pete
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// D.cpp: Singleton returning pointer to polymorphic class
//
// [Q] How to change definitions of derived classes to disallow
// direct construction of derived objects?
// ie CDerived1 D1 or CDerived2* D2 = new CDerived2 should not
// possible!
//
#include "stdafx.h"
#include <iostream>
#include <memory>
#include <cassert>
using namespace std;
///////////////////////////////////////////////////////////////////////////////
static int Type(0);
/////////////////////////////////////////////////////////////////// forwards //
class CBase;
class CDerived1;
class CDerived2;
///////////////////////////////////////////////////////////////////////////////
class CBase
{
public:
static CBase* GetInstance();
virtual ~CBase();
virtual ostream& Print(ostream& os) const;
protected:
CBase();
CBase(const CBase&); // not implemented
CBase& operator=(const CBase&); // not implemented
private:
static auto_ptr<cbase> Instance_; // will auto destroy
};
///////////////////////////////////////////////////////////////////////////////
class CDerived1 : public CBase
{
public:
virtual ~CDerived1();
ostream& Print(ostream& os) const;
public: // but should be protected to disallow direct creation
CDerived1();
CDerived1(const CDerived1&); // not implemented
CDerived1& operator=(const CDerived1&); // not implemented
};
///////////////////////////////////////////////////////////////////////////////
class CDerived2 : public CBase
{
public:
virtual ~CDerived2();
ostream& Print(ostream& os) const;
public: // but should be protected to disallow direct creation
CDerived2();
CDerived2(const CDerived2&); // not implemented
CDerived2& operator=(const CDerived2&); // not implemented
};
///////////////////////////////////////////////////////////////////////////////
ostream& operator<<(ostream& os, const CBase& rhs)
{ return rhs.Print(os); };
ostream& operator<<(ostream& os, const CDerived1& rhs)
{ return rhs.Print(os); };
ostream& operator<<(ostream& os, const CDerived2& rhs)
{ return rhs.Print(os); };
///////////////////////////////////////////////////////////////////////////////
auto_ptr<cbase> CBase::Instance_;
CBase::CBase()
{ cout << "Base: ctor\n"; }
CBase::~CBase()
{ cout << "Base: dtor\n"; }
CBase* CBase::GetInstance()
{
// as coded is not thread-safe! required double-check/lock
//
if (Instance_.get() == NULL)
{
switch (Type)
{
case 1:
Instance_.reset(new CDerived1);
break;
case 2:
Instance_.reset(new CDerived2);
break;
default:
assert(0);
break;
}
}
return Instance_.get();
}
ostream& CBase::Print(ostream& os) const
{
return os<< "CBase::Print Address=0x" << hex << (Instance_.get()) << dec;
};
///////////////////////////////////////////////////////////////////////////////
CDerived1::CDerived1()
: CBase()
{ cout << "CDerived1: ctor\n"; }
CDerived1::~CDerived1()
{ cout << "CDerived1: dtor\n"; }
ostream& CDerived1::Print(ostream& os) const
{ CBase::Print(os); os << "\nCDerived1::Print"; return os; }
///////////////////////////////////////////////////////////////////////////////
CDerived2::CDerived2()
: CBase()
{ cout << "CDerived2: ctor\n"; }
CDerived2::~CDerived2()
{ cout << "CDerived2: dtor\n"; }
ostream& CDerived2::Print(ostream& os) const
{ CBase::Print(os); return os << "\nCDerived2::Print"; };
///////////////////////////////////////////////////////////////////////////////
int main(int, char**)
{
::Type = 2;
CBase* B2 = CBase::GetInstance(); // get a CDerived2
cout << *B2 << endl << endl;
CDerived1 D1; // should not be allowed
cout << D1 << endl << endl;
CDerived2* D2 = new CDerived2; // should not be allowed
cout << *D2 << endl << endl;
delete D2;
return 0;
}
///////////////////////////////////////////////////////////////////////////////
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There is a reason that Singleton is a Software Design Pattern 
"No matter where you go, there your are." - Buckaroo Banzai
-pete
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I appreciate your taking the time to look at this question but your "answer" is less than helpful. The singleton pattern is implemented correctly; I've even implemented the auto_ptr to destroy on exit and noted the need for thread-safety (not required in this simple testbed). I've reread the GoF section on singletons and search >100 sites, lots of info on regular classes but nothing on polymorphic classes. The GoF site shows a polymorphic use but the ctor is public in all the dervied classes, so, they could be directly instantiated.
So, again, how to ensure derived classes are not implemented directly.
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kylur wrote:
your "answer" is less than helpful
Yes that is correct. I did not understand the point or goal of your design and actually still don't. Perhaps Mr. Binns solution is what you were looking for.
Good luck
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Make the derived constructors private (or protected), and add "friend CBase;" to your derived class definition.
Ryan "Punctuality is only a virtue for those who aren't smart enough to think of good excuses for being late" John Nichol "Point Of Impact"
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Much appreciated... exactly what I needed.
Thank you,
Kylur.
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I want to check if a file path I have is valid and refers to a file before actually going ahead and opening it. Is there a quick and easy way using MFC, the Platform SDK, or the runtime library to check this?
Joel Holdsworth
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Just open the file. Given that you're using a multitasking operating system, there's always a chance that the file could be deleted, renamed, moved, whatever between the time that you check, and the time that you open it.
If you really insist on doing it this way, you could try using FindFirstFile/FindNextFile.
Edit: MFC has the CFileFind class, which wraps these APIs.
Stability. What an interesting concept. -- Chris Maunder
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try{
//try opening the file here
catch(someexception){
//the file path is not valid...
}
this way if the filepath does exist you don't have to do that extra step.
Good luck.
"If I don't see you in this world, I'll see you in the next one... and don't be late." ~ Jimi Hendrix
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<br />
CFile f;<br />
CFileStatus fs;<br />
<br />
if(f.GetStatus(lpszFileName, fs))<br />
{<br />
}<br />
else<br />
Arjan
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