Window won't display on button command!?

*sigh* first the menu now the buttons....anyway, this time i can't get a window to display when the button is pressed:

mainprogg.cpp (section)

Code:

LRESULT CALLBACK 
WndProc( HWND hWnd, UINT message,
WPARAM wParam, LPARAM lParam )
{
static HWND level_edit;
static HWND button;

switch ( message ) {

case WM_CREATE:
return 0;

case WM_CLOSE:
if(MessageBox (NULL, "Are you sure you want to close the program?\nAll un-saved data will be lost." , "Exiting...", 0 + MB_YESNO + MB_DEFBUTTON2 + MB_ICONQUESTION)==IDYES)
{
PostQuitMessage( 0 );
}
return 0;

case WM_DESTROY:
return 0;

case WM_KEYDOWN:
switch ( wParam ) {

case VK_ESCAPE:
if(MessageBox (NULL, "Are you sure you want to close the program?\nAll un-saved data will be lost." , "Exiting...", 0 + MB_YESNO + MB_DEFBUTTON2 + MB_ICONQUESTION)==IDYES)
{
PostQuitMessage( 0 );
}
return 0;
}


case WM_COMMAND:
switch(LOWORD(wParam))
{
case ID_EXIT:
if(MessageBox (NULL, "Are you sure you want to close the program?\nAll un-saved data will be lost." , "Exiting...", 0 + MB_YESNO + MB_DEFBUTTON2 + MB_ICONQUESTION)==IDYES)
{
PostQuitMessage( 0 );
}
break;

case ID_LVLEDIT:
LvlEdit(hWnd, level_edit, button, GetModuleHandle(0));
break;
return 0;
}

WORD wID,wNotify;

  wID=LOWORD(wParam);
  wNotify=HIWORD(wParam);
    if (lParam)
    {
    //if a button was clicked
    if (wNotify==BN_CLICKED)
      {
       //if a buttons id was clicked
      if (wID==10)
      {
      LvlEdit(hWnd, level_edit, button, GetModuleHandle(0));
      }
   }
}
return 0;

windowcall.h

Code:

BOOL LvlEdit(HWND hWnd, HWND level_edit, HWND button, HINSTANCE hInstance )
{
level_edit = CreateWindow(
"LVLEDIT", "Level Editor",
WS_CHILD | WS_CAPTION | WS_VISIBLE,
200, 0, 592, 516,
hWnd, NULL, hInstance, NULL );

button = CreateWindow("BUTTON", "Close", WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 528, 0, 64, 24, level_edit,(HMENU) 210, (HINSTANCE) GetWindowLong(hWnd, GWL_HINSTANCE), NULL);
}

not quite sure how much of the mainprog.cpp is actually neccessary, but anyway/.......thanks ahead of time

-psychopath

Does the code ever enters to where the program creates the window via LvlEdit()?

Kuphryn

yupp...here:

Code:

//if a buttons id was clicked
      if (wID==10)
      {
      LvlEdit(hWnd, level_edit, button, GetModuleHandle(0));
      }

except it dosn't work??

-psychopath

Try calling GetLastError() after you attempt to create the window.

that diddn't seem to do anything either =/

-psychopath

man! this is some crappy code you have there fellah!
I don't even want to count bugs and bad solutions. anyway:

Code:

LRESULT CALLBACK  WndProc( HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam )
{
	static HWND level_edit;
	static HWND button;

	switch ( message )
	{
		case WM_CREATE:
		return 0;

		case WM_CLOSE:
			if(MessageBox (NULL, "Are you sure..." , "Exiting...",  MB_YESNO | MB_DEFBUTTON2 | MB_ICONQUESTION)==IDYES)
				DestroyWindow(hWnd);			
			return 0;

		case WM_DESTROY:
			PostQuitMessage(0);
			return 0;

		case WM_KEYDOWN:
			switch (wParam)
			{
			case VK_ESCAPE:
					CloseWindow(hWnd);
					break;
			}
			return 0;

		case WM_COMMAND:
			WORD wID     = LOWORD(wParam);
			WORD wNotify = HIWORD(wParam);

			if (lParam)
				switch (wID) // Controls
				{
				case IDC_EXIT:
					if (wNotify == BN_CLICKED)
						CloseWindow(hWnd);
					break;
	
				case IDC_LVLEDIT:
					if (wNotify == BN_CLICKED)
						if (!LvlEdit(hWnd, &level_edit, &button, GetModuleHandle(0)))
						{
							MessageBox(NULL, "LvlEdit() failed! Commiting suicide...", "Error", MB_OK | MB_ICONERROR);
							DestroyWindow(hWnd);
						}
					break;
				}
			else
				switch (wID) // Menu
				{
				}

			return 0;
}

and your LvlEdit function:

Code:

BOOL LvlEdit(HWND hWnd, HWND *level_edit, HWND *button, HINSTANCE hInstance )
{
	*level_edit = CreateWindow("LVLEDIT", "Level Editor",
	                           WS_CHILD | WS_CAPTION | WS_VISIBLE,
	                           200, 0, 592, 516,
	                           hWnd, NULL, hInstance, NULL );
	if (*level_edit == NULL)
	{
		//MyErrorHandler(GetLastError());
		return FALSE;
	}
	
	*button = CreateWindow("BUTTON", "Close",
	                       WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON,
	                       528, 0, 64, 24,
	                       level_edit, (HMENU)IDC_MYBUTTON, hInstance, NULL);
	if (*button == NULL)
	{
		//MyErrorHandler(GetLastError());
		return FALSE;
	}

	return TRUE;
}

and you _should_ put all your's control IDs in resource.h file _and_ use them:

Code:

#define IDC_EXIT     1001
#define IDC_LVLEDIT  1002
#define IDC_MYBUTTON 1003

If it still doesn't work try calling ShowWindow after creating child windows and check if "LVLEDIT"-class is registered.

still can't get it to work =/
iv'e switched the project to VC++ now, and have removed the menu.....here is the code that should display the window....everything compiles perfectly, but nothing happens when the button is pressed:

Code:

case WM_COMMAND:
switch(LOWORD(wParam))
{
			WORD wID     = LOWORD(wParam);
			WORD wNotify = HIWORD(wParam);

			if (lParam)
				switch (wID) // Controls
				{
				case 10:
				LvlEdit(hWnd, level_edit, button, GetModuleHandle(0));
				if (!LvlEdit(hWnd, level_edit, button, GetModuleHandle(0)))
						{
							MessageBox(NULL, "LvlEdit() failed! Commiting suicide...", "Error", MB_OK | MB_ICONERROR);
							DestroyWindow(hWnd);
						}

				break;

				}
			
			return 0;
}

-psychopath

--EDIT--
this may be pointless, but here is the code for the button itself:

Code:

HWND button;
button = CreateWindow("BUTTON", "Sprites", WS_VISIBLE | WS_CHILD | BS_PUSHBUTTON, 16, 40, 64, 24, menu_box,(HMENU) 10, (HINSTANCE) GetWindowLong(hWnd, GWL_HINSTANCE), NULL);