Subclass Procedure failed for edit control

vishalgpt

Hi to all, I am subclassing an EDIT Control. But the WM_CREATE is not fired in Subclassed Procedure EditProc. What is wrong, i am unable to find. I had tried WM_NCCREATE also, but failed. pls help.. :( :confused:

#include
#include "resource.h"

WNDPROC OldEditProc;
HINSTANCE hInst;
HFONT hFont;

WNDPROC SUBCLASS(HWND hControl,WNDPROC newWindowProc)
{
return (WNDPROC)SetWindowLong(hControl,GWL_WNDPROC,(LONG)newWindowProc);
}

LRESULT CALLBACK EditProc(HWND hWnd,UINT Msg, WPARAM wParam, LPARAM lParam)
{
switch(Msg)
{
case WM_CREATE:
SetWindowText(hWnd,L"Welcome");
break;
}
return OldEditProc(hWnd,Msg,wParam,lParam);
}

LRESULT CALLBACK stdEditProc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{

switch(Msg)
{
case WM\_INITDIALOG:
	OldEditProc = SUBCLASS(GetDlgItem(hWnd,IDC\_EDIT1),EditProc);
	break;
case WM\_CLOSE:
	EndDialog(hWnd,TRUE);
	break;
}
return FALSE;

}

INT APIENTRY wWinMain( __in HINSTANCE hInstance, __in_opt HINSTANCE hPrevInstance, __in_opt LPWSTR lpCmdLine, __in int nShowCmd )
{
hInst = hInstance;
return DialogBox(hInst,MAKEINTRESOURCE(IDD_DIALOG1),NULL,(DLGPROC)stdEditProc);
}

Regards, Vishal

_Superman_

WM_CREATE and WM_NCCREATE will not be sent to the sub-classed procedure because they have already been sent to the original procedure. But you will get other WM_COMMAND messages and notifications.

«_Superman_» _I love work. It gives me something to do between weekends.

_Microsoft MVP (Visual C++)

Polymorphism in C

vishalgpt

got it, but one small doubt, if i want to set font for a control i usually do it in WM_INITDIALOG or WM_CREATE section, but in this case which Message has to be used for setting font, As i had found this can be done in WM_PAINT section also, but WM_PAINT is triggered every now and then, resulting in extra overload. Please guide which message will be better to set a font for a control in its subclassed procedure. Thanks.. :)

Regards, Vishal

_Superman_

So if you do this before you sub-class the control in the original procedure, does it change after sub-classing? Don't do it in WM_PAINT. It will be an unnecessary overhead. Instead, you could define a custom message and do a PostMessage with the custom message to the control after it is sub-classed in WM_INITDIALOG.

«_Superman_» _I love work. It gives me something to do between weekends.

_Microsoft MVP (Visual C++)

Polymorphism in C

vishalgpt

thanx, I will check and update the result. Thanx once again for your guidance.

Regards, Vishal