• C

C programming win32 api RichEdit control problem

Hello I am haveing a problem creating a richedit control.I load the riched.dll  in the window main like so......

        MessageBox(hwnd, "Could not load Riched32.dll", "Error", MB_OK | MB_ICONERROR);

then I create my window in the WM_CREATE like so ......

                    0, 0, 100, 100,     hwnd, (HMENU)IDC_MAIN_EDIT, GetModuleHandle(NULL), NULL);

                  if(hEditBox == NULL)
                              MessageBox(hwnd, "Could not create hEditBox.", "Error", MB_OK | MB_ICONERROR);

Everything compiles just fine but when I go and  run it my MessageBox  prompts me it could not create the hEditBox control.I am using windows 98 sec.Can anyone  help me out and maybe tell me what I am doing wrong.If anyone needs any more information please let me know.Also I have tried to load the riched20.dll for 2.0 and use RICHEDIT_CLASS with no luck.

Thank you for your time and help
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Kent OlsenDBACommented:

When the CreateWindow() call fails, check the value of GetLastError().  It should have enough information to isolate the problem.

bizbizAuthor Commented:

Hello and thank you for your reply, Kent.
The Error code I get back is this

The operation completed successfully

This is my Error checking code

      if(hEditBox == NULL)
                    err = GetLastError();
                         FormatMessage(FORMAT_MESSAGE_ALLOCATE_BUFFER |FORMAT_MESSAGE_FROM_SYSTEM,NULL,err,0,(LPTSTR)&result,0,NULL);
                                                                                MessageBox(hwnd, result, "Error", MB_OK | MB_ICONERROR);

What would be causeing this error and stop the edit control from working.

Thank you for any help you can give me on this.

Hey I think you should not   load  "riched32.dll"   but instead only  "riched32"

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Kent OlsenDBACommented:

I trust that your code really looks like:

      if(hEditBox == NULL)
              err = GetLastError();
              MessageBox(hwnd, result, "Error", MB_OK | MB_ICONERROR);

In this case it shouldn't matter, but it may start to give a false error message box once the problem is resolved.

Does the LoadLibrary() call register all of the classes within the library?  "RICHEDIT" is not one of the "standard" classes so it must be registered to Windows with RegisterClass() or RegisterClassEx().

I'm not familiar enough with LoadLibrary() to know if it also does all of the required class registration.

bizbizAuthor Commented:
Following the instructions here

it does not say I have to register the class.I tryed to register the class But its like the class is not there.
That is if the class is Called RICHEDIT in the Riched32.dll.I also tryed the riched20.dll with RICHEDIT_ClASS.The RICHEDIT_CLASS is define in my riched.h file.But it stilll does the same.
bizbizAuthor Commented:
I am clueless here.Someone throw me a bone hehehe or something.Thank you for your reply Kent.
bizbizAuthor Commented:
I would think RICHEDIT_CLASS etc would be the  lpszClassName name not the WNDCLASSEX class its self. So what would I register if I had to register the class????
Kent OlsenDBACommented:

The page:


describes one way of dynamic linking.  After the LoadLibrary() call, call GetProcAddress() to see if the API is present.

bizbizAuthor Commented:
Ok the......

LoadLibrary("Riched32") or  LoadLibrary("riched20")  is  not equal to NULL.But the.....

GetProcAddress() is equal  to NULL.....So this mean I don't have the api huh :-( ????
What to do  now.Thank you once again Kent for your reply/help.

bizbizAuthor Commented:
Thank you for your reply as well Ajar  
bizbizAuthor Commented:
Ok I tryed a diffrent way and its stilll doing the same thing i used my dlltool and produced a librich20.a file and I linked it  but it stilll does the same thing and I used RICHEDIT_CLASS . Anyone got any ideas???? What could be going on.Is there anything speacial I have to do with the InitCommonControls(); by chance????.

Thank you for your time.
bizbizAuthor Commented:
No one has answered this question.Can I have the points back???
PAQed, with points refunded (170)

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