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I'll take a shot at describing what I've done in the past and you can decide if it is similar to what you are doing.
Let's say you have an MFC application project which contains some kind of user interface and application implementation. Let's also say that the application must link to a few, possibly many .lib files in order to build and link. It could be that the main app project is mostly the user interface and gui implementation and perhaps you have a complex situation where once the user configures something through the GUI, some complicated thread has to be started and will perform some task (such as opening a socket to some communication device such as an ethernet port or some other kind of port).
So you might have a lot of your code that is building and processing messages in an MFC extension DLL. So you must write that code within the DLL, compile it and have your application link to the resulting .lib files. Within the DLL, you would have exported a function, such as a RUN function of some kind, that the main application links to and calls. Perhaps the RUN function then uses AfxBeginThread to launch a thread which runs on it's own and performs whatever task it was designed to do. Meanwhile, Run returns to the main app which can move on to whatever task it needs to do next. I'm not sure if that is what you meant by Program within a lib file. The lib file is for linking but the .dll file is in the directory where the one and only .exe file and will contain run time info.
So if this concept is similar to what you are inquiring about, yes it can be done rather easily. Just don't forget to add some stop method along with the run method so that a thread shutdown method can be implemented to prevent crashes and memory leaks when the program is shut down. In my example, I'm really referring to one actual process (.exe) which links to .dll files containing functions that can be called. The .dll could also contain classes which contain the thread start stop functionality and that would be more OO. So perhaps the main app would link to a class that it could instantiate, and upon instantiation the class would launch it's own internal thread and kill the thread when the object is eventually destroyed using 'delete'.
Hope that helps; either way, my fingers got some good exercise.
Best Regards,
Shawn
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hi everybody,
I am visual C++.NET & doing MFC Project with HTML support. Now I have to face serious problem when giving the path for Images in HTML.
for example:-
In the HTML page
But this path is a FIX ONE.when I use background="res/bg.gif" ,the Image is not displaying...
So what is the correct way to link Image with HTML Page in Visual C++.NET
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Hi, try adding the image to you ressources then in the html use
<BODY background="res:/IMAGES/#144">
where IMAGES is the ressource type and 144 is the ressource ID.
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I write very programs code with TCP/IP , IPX/SPX and netbios protocols that good work in win32 platform but I can not create a network connection between DOS and WIN32 , also I installed LSL.com DE22x.com(my net card driver) IPXODI.exe NETBIOS.exe in my dos workstation and installed IPX/SPX & NETBIOS protocols in my windows 2000 server station but my program in DOS workstation don't connect to my vc++ sample in windows station.
can you help me ?
Thanks
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Hi,
I'd like to write a small DLL using MFC, which only should have a small dialog, and print some details on a printer. I'd like to call that DLL and display it's dialog from various MFC apps.
I simply don't know how to build an MFC-DLL containig a dialog, and what to notice. Do you have any hints for me how to begin, or a link to a tutorial?
Thank you very much in advance,
Erik
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Select New from the File menu. On the New dialog, select the Projects tab. Select MFC AppWizard (dll), give the project a name, and click the OK button. Decide if you want a regular DLL or an MFC Extension DLL, and click the Finish button. Select Resource from the Insert menu. Select Dialog and click the New button. Populate the dialog template as necessary.
There are a few more steps (e.g., an exported function that will invoke the dialog) but these should get you headed in the right direction.
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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Hi all,
I've wrote an application based on the DirectX StillCap example, which allows the user to get the latest frame and then performs whatever segmentation methods they want on it. The problem which I have came across is that I appear to have more data than I am expecting! I'm expecting an 320x240 RGB image but the buffer I get is 233,472 long instead of 230,400 (i.e. 320x240x3).
Does anyone know what these extra 3,072 bits are (I'm guessing they may be header information)? And also where abouts in the stream they are appearing? as I'm not missing any information from the image when I save it so I'm assuming that is is probably at the end of the buffer (I've saved the buffer as a RAW image and then opened it up in Paint Shop Pro and everything appears fine)
Many Thanks,
Andy
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Hi All,
searched high 'n low, and can't find a function/or where to look, to see if a system has usb ports installed. don't need to know what the devices are, just if the motherboard has a usb port.
needs to be c/c++, no wmi, function must be compatible with w98/w2k/xp
any help or advice appreciated
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You might try the Win32_USBController and Win32_USBControllerDevice WMI classes.
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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Hi David,
thanks for he info, but i can't use WMI, gonna make the app too fat for its purpose with com and all the other stuff.
plus the app needs to run and detect on w98 systems, which WMI is not activated by default, and the end users are not bright enough to start hacking the registry.
any way with using WMI ??
thanks again
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any with using WMI SHOULD BE:
any way without using WMI
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is there an easy 1 line or inline way of converting a CString into a basic_string of TCHARs?
Joel Holdsworth
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How about:
string str;
CString cstr("Hello");
str = (LPCTSTR) cstr;or:
basic_string<TCHAR> str;
CString cstr("Hello");
str = (LPCTSTR) cstr;
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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Oh yeah  .... Thanks for that! I gues I got a bit freak out when the compiler spat out template filled error messages!
Joel Holdsworth
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I want suggestions with the things needed to be considered when am doing
1.Encryption of a file with AES(RIJNDAEL) algorithum using javax.crypto.* in a java application. and
2.Decryption of the encrypted stuff mentioned above in VC++ .
To be more clear,i am encrypting a file using the java 1.4 libraries and wants to decrypt the same encrypted file using VC++.
RAGU MANDA
(MALAYSIA)
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The encryption library should not affect the underlying algorithm. In other words, you should be able to encrypt the data using one library and then decrypt it using a different library.
Kuphryn
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If I call AfxEndThread within a thread will the dynamic memory that I have allocated in this thread be released or just the memory that MFC itself have allocated for it's inner needs. Thanks.
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Until you call delete or the application is shut down, the memory remains allocated.
"When I was born I was so surprised that I didn't talk for a year and a half." - Gracie Allen
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I am writing two ActiveX objects in MFC 7, one server and one client. I want my client object to connect to the server object through the Internet(not LAN); how can I pass through the firewalls/proxy that reside on the Internet ?
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Hello everyone.
I am quite new at COM and DirectX programming, and I have some problems to understand how to use properly all of this stuff to build my own transform filter.
My app take the voice as an input, convert it into UMTS format and send it through the internet, at the end of it, the data stream is uncompressed and played. But this is just my dream. For now I would like to know how to build a Transform filter, and how to use the CTransformFilter interface.
I have started to build a COM object with VC++ ATL Wizard, but any "public CTransformFilter" throws me away, even if the appropriate "#include "Streams.h" and "Strmbased.lib" in the Settings.
Thanks for any kind of help.
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When I using SetIpNetEntry( ), I got wrong IP in ARP Table
MIB_IPNETROW at1;
...
at1.dwAddr = inet_addr("80.0.0.30");
//or at1.dwAddr = pMib->table[0].dwAddr;
SetIpNetEntry((MIB_IPNETROW *)&at1);
Then I get 0.0.0.30 in ARP Table instead of 80.0.0.30.
Even if I get MIB_IPNETROW by means of GetIpNetTable( ) and then insert it to SetIpNetEntry( ) I get 0.0.0.X
Help me.
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When I using SetIpNetEntry( ), I got wrong IP in ARP Table
MIB_IPNETROW at1;
...
at1.dwAddr = inet_addr("80.0.0.30");
//or at1.dwAddr = pMib->table[0].dwAddr;
SetIpNetEntry((MIB_IPNETROW *)&at1);
Then I get 0.0.0.30 in ARP Table instead of 80.0.0.30.
Even if I get MIB_IPNETROW by means of GetIpNetTable( ) and then insert it to SetIpNetEntry( ) I get 0.0.0.X
Help me.
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hi all,
I have ATL composite control, when the control in loaded is IE the background color is changed (to white). I want the default background color for my composite control dialog box.
Do i have to create a brush and set the background color?
Thanks in Advance
Abhi Lahare
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Hi guys,
I am going to add Tab control to my Project.There are 3 Tab labels in my Tab Control.Now I want to add Images to Tablabel. BUT I DON'T WANT TO ADD TEXT FOR that Label.I just want to add a Image Completely to the Label.
I do like this:
CImageList img;
CTabControl m_tabctrl;
img.Create(IDB_BITMAP2, 11, 4, RGB(0, 255, 0));
m_tabctrl.SetImageList(&m_imagelistTab);
pfirst=new first;-------->This is a Pointer from a dialog..
pfirst->Create(first::IDD, &m_tabctrl);
m_tabctrl.AddTab(pfirst,"", 0);
The Image is adding to the Label.But there is a small space remaining in the Label.I don't want to add Text to the Label.
So How do I add Image completely to the Tablabel with out remainng Space?
Thanks...
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Hi all,
I want to call a CDAODatabase class from my Regular MFC DLL, I have followed the instruction of Microsoft MSDN. But the following code incorrect run.
Can you help me on it ?
Thanks a lot for your reply.
Tuan
PS : This is my code
extern "C" BOOL PASCAL EXPORT VehicleChange()
{
AFX_MANAGE_STATE(AfxGetStaticModuleState());
CDaoDatabase* connData;
try{
connData = new CDaoDatabase ;
if(connData->IsOpen()) {
AfxMessageBox("The connection has been openned");
}else{
CString strConnect= "ODBC;DSN=FieldTrip;UID=;PWD=;";
connData->Open(_T(""), TRUE,FALSE, strConnect);
}
strSql = "update VehicleInformation set cAacity=11";
connData->Execute(strSql,dbSQLPassThrough);
} catch(CException *e){
connData->Close();
delete connData;
AfxDaoTerm();
return false;
}
AfxMessageBox("success");
connData->Close();
delete connData;
AfxDaoTerm();
return true;
}
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