🚀 go-pugleaf

Alexandre S� wrote:

>> You are not getting a window that is capable of receiving
>> HWND_BROADCAST
>
>That�s not the question...

Umm..in this example case, it is.

>Here is the solution/explanation by Peter Below (TeamB):

Yes, that is to be considered, but it is not the problem I see here.

>But still remain the question: why on a different IDE (Borland C++ anyway)
>it works without register the broadcast message?
>
>That�s why the problem arises... I had to migrate a Borland C++ project to
>the Borland C++ Builder 6 (a Delphi like IDE) and on such "Delphi like IDE"
>it�s necessary to register the broadcast message (like it have to be).

I compiled your example code, and that wasn't the problem.
The problems was RegisterClass failed
Here is your example, with error checks...

#include <windows.h>

#pragma	argsused
 LRESULT CALLBACK  WndProc(HWND hWnd, unsigned msg,
		 WPARAM wParam, LPARAM lParam)
{  return 0;
}
//--------------------------------------------------------------------------
#pragma argsused
WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR
lpCmdLine, int nCmdShow)
{
  WNDCLASS windowClass;
  windowClass.style         = CS_HREDRAW | CS_VREDRAW | CS_OWNDC ;
  windowClass.lpfnWndProc   = (WNDPROC)WndProc;
  windowClass.cbClsExtra    = 0 ;
  windowClass.cbWndExtra    = 0 ;
  windowClass.hInstance     = hInstance ;
  windowClass.hbrBackground = (HBRUSH)(GetStockObject(BLACK_BRUSH));
  windowClass.lpszMenuName  = NULL;
  windowClass.lpszClassName = "TMyForm";
if( 0 == RegisterClass(&windowClass) )
{	/* add code here to evaluate GetLastError() */
	MessageBox(0,"No Register","Peek",MB_OK);
	return 0;
}
 HWND hWindow = CreateWindow ("TMyForm", "MyForm",
  WS_POPUP | WS_BORDER,
  10,10,200,200,
  NULL, NULL, hInstance, NULL);
if( NULL == hWindow )
{	/* add code here to evaluate GetLastError() */
	MessageBox(0,"No Create","Peek",MB_OK);
	return 0;
}
  PostMessage(HWND_BROADCAST, WM_USER, 0, 0L);

  MSG msg;
  if(PeekMessage (&msg, NULL, 0, 0, PM_REMOVE)) {
     MessageBox(NULL, "Work!", "", MB_OK);
  } else {
     MessageBox(NULL, "Don�t work!", "", MB_OK);
  }
  return 0;
}

Further testing shows this line to be incorrect:
  WNDCLASS windowClass;
Ir should be
  WNDCLASS windowClass = {0};
That gets the class registered.
Then the CreateWindow() fails with
"Cannot create a file when that file already exists"
That I'll leave up to you.