|
I found out that this is a general problem with Edit ctrls inside CFormView. You have to add an ON_UPDATE_HANDLER for ID_COPY,ID_PASTE, etc (that's why i couldn't find any WM_COPY, MFC turn them into commands!).
|
|
|
|
|
how to use crystal report with ado
|
|
|
|
|
|
I have a problem with a simple ifstream in Visual C++ 6.0 (Console App). The following part of programcode produces a "0xC0000005: Access Violation" Error. Can anybody see the problem?
included headers:
#include "stdafx.h"
#include "conio.h"
#include "windows.h"
#include "iostream.h"
#include "fstream.h"
Code:
...
ifstream dat;
dat.open("c:\\back.ini");
if(!dat){
return false;
}
...
|
|
|
|
|
you may not test directly !dat. you should look the error bits of ios_base class...
TOXCCT >>> GEII power
[toxcct][VisualCalc]
|
|
|
|
|
No, the problem is to open the file. If i remove if(!dat), the same error occures.
|
|
|
|
|
but wher does it crash ?
could you please help us in copying the lines of code && error description ?
TOXCCT >>> GEII power
[toxcct][VisualCalc]
|
|
|
|
|
It crashes during the running process, its not during the compiling process. The Application end with the Errorcode:
Nicht abgefangene Ausnahme in back.exe: 0xC0000005: Access Violation.
and display's me a part from the istream.cpp:
istream& istream::operator>>(char * s)
{
int c;
unsigned int i, lim;
if (ipfx(0))
{
lim = (unsigned)(x_width-1);
x_width = 0;
if (!s)
{
state |= ios::failbit;
}
else
{
for (i=0; i< lim; i++)
{
c=bp->sgetc();
if (c==EOF)
{
state |= ios::eofbit;
if (!i)
state |= ios::failbit|ios::badbit;
break;
}
else if (isspace(c))
{
break;
}
else
{
Stopps here-> s[i] = (char)c; <---Application Stopps here
bp->stossc(); // advance pointer
}
}
if (!i)
state |= ios::failbit;
else
s[i] = '\0';
}
isfx();
}
return *this;
}
|
|
|
|
|
cpp_fritz wrote:
istream& istream::operator>>(char * s)
...
Stopps here-> s[i] = (char)c; <---Application Stopps here
's' was not properly initialized before being passed in.
"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!
Honoured as one of The Most Helpful Members of 2004
|
|
|
|
|
Functions and variable can be declared as static.
Can a class be declared as static?
For example given below
static class X {
public :
int x;
};
Philip
|
|
|
|
|
u should know what static means.
static makes a thing (function or varable) into real thing - or the thing is created in memory (an instance for var).
class is a concept or blueprint which can not be created in memory (its instance can).
includeh10
|
|
|
|
|
Nope, but you can do like this:
static class X {
public :
int x;
} static_object_of_class_X; // The variable static_object_of_class_X will have static linkage.
|
|
|
|
|
writing a class means in defining the memory organisation of the type you are creating.
static class X { /*...*/ }; is as if you define a syte that is already static (which don't mean anything).
static means several things.
1st, static means that the life of the variable should be durind still the program is running. of course, its scope don't change, but the variable is not destroyed when the function it is in ends.
2nd, static means that the data member is defined once for all instances of an object.
3rd, static applied for function members means that the function may access only static data members.
TOXCCT >>> GEII power
[toxcct][VisualCalc]
|
|
|
|
|
Hello All!
I have some queries related to MFC PropertySheet and page. Please somebody provide me useful pointer or help towards this
#1 I want to know how to add custom Skin or Color to Dialog Box Title Bar
#2 How to get ID of BACK,NEXT and FINISH button in MFC Based Wizard (my custom) because I want to change default look of these button or rather say I want to add color to these button.
Thanks
"I Think this Will Help"
<h5
alok gupta="" <br=""> visit me at http://www.thisisalok.tk
|
|
|
|
|
|
Hello Sir!
As you see i am Here talking about MFC not Win32 Api based project. Actually these are Default Button in Property Sheet Wizard,i want to apply custom Color to these button.
Thanks
"I Think this Will Help"
<h5
alok gupta="" <br=""> visit me at http://www.thisisalok.tk
|
|
|
|
|
Thanks Sir First Problem is Solved,but second problem is still exist as i have to skin NEXT,BACK button and i couldn't find any documentation abt that in MSDN or other good Sources
THanks
"I Think this Will Help"
<h5
alok gupta="" <br=""> visit me at http://www.thisisalok.tk
|
|
|
|
|
Hey...
I have an MFC application where I have added the first recordset for the application.Now I face problem in adding second recordset for the MFC which means to create new class for retrieving the variables from other database table.I have tried to follow the MSDN links and tutorial on this but as I follow the steps,I faced problem in creating new class.For example I tried to create new class CSubjectSet but it return the error which states file SubjectSet.cpp and CSubjectSet.h does not exist.
Please help if you encountered this problem before or known the cause of this problem.
Thanks,
Lee
|
|
|
|
|
do not use CRecordSet which is the worst in the world.
u need to know how to use database driver (or MFC classes) to read/write data from/to database.
In my opnion, the best are Cdc... (a set of classes, i.e. CdbDatabase, CdbRecordset etc).
please note: second char is lower case: Cdb..., not CDb...
the head file and lib, dll files are available in VC 5.0 but i can not find them in VC 6.0.
according to Microsoft Docs, database issues of VB is based on these classes.
long way to go to really understand these classes, but you have to go if u really want to do some real things.
includeh10
|
|
|
|
|
i want to add pop-up menu with multiple menu items to context help menu (related to right-click) of windows explorer.
see picture bellow, the pop-up menu is similar to menu SOCKShell on picture bellow.
click me to see the picture
thanks
includeh10
|
|
|
|
|
|
|
Hi Micheal,
your sample is for files only: when i right-click a folder on windows explorer, the menu does not appear on shell menu.
i hope the pop-up menu can be applied to any folder, single file or multiple files and folders.
cheers
includeh10
|
|
|
|
|
Hi all,
I need some info on the transfer of UNICODE data using HTTP protocol.
Please suggest some websites/ articles
|
|
|
|
|
What are you using for HTPP transfer WinINet Api or Sockets
"I Think this Will Help"
<h5
alok gupta="" <br=""> visit me at http://www.thisisalok.tk
|
|
|
|
General 
News 
Suggestion 
Question 
Bug 
Answer 
Joke 
Praise 
Rant 
Admin 
Submit an article or tip
