I have found a GDI leak in our huge application software.
Below is a simple program to test this problem.
The Idea is that the main dialog box opens another dialog box(dialog box A).
If the dialog box A include a bitmap function for a CStatic control,
it will create GDI leak.
Even when I use "DeleteObject(bitmap)".
Have I done some thing wrong ?
Do you have any thoughts?
Thanks.
...
DIALOG_BOXA DIALOGEX 0, 0, 219, 142
STYLE DS_SETFONT | DS_FIXEDSYS | WS_POPUP | WS_VISIBLE | WS_BORDER
EXSTYLE WS_EX_STATICEDGE
FONT 8, "MS Shell Dlg", 400, 0, 0x1
BEGIN
DEFPUSHBUTTON "OK",IDOK,46,121,50,14
PUSHBUTTON "Cancel",IDCANCEL,119,121,50,14
CONTROL 131,RED_LIGHT0,"Static",SS_BITMAP,7,17,80,37
PUSHBUTTON "",RED_LIGHT1,7,60,80,37,BS_BITMAP | NOT WS_TABSTOP
END
DialogBoxA: public CDialog
{
...
CStatic m_static;
CButton m_button ;
...
}
void DialogBoxA::DoDataExchange(CDataExchange* pDX)
{
CDialog::DoDataExchange(pDX);
DDX_Control(pDX, RED_LIGHT0, m_static);
DDX_Control(pDX, RED_LIGHT1, m_button);
}
BOOL DialogBoxA::OnInitDialog()
{
CDialog::OnInitDialog();
HBITMAP bitmap ;
bitmap = LoadBitmap ( AfxGetApp()->m_hInstance,BEACON_BIG_RED_ON) ;
m_static.SetBitmap (bitmap );
DeleteObject(bitmap);
bitmap = LoadBitmap ( AfxGetApp()->m_hInstance,BEACON_BIG_RED_ON) ;
m_button.SetBitmap (bitmap );
DeleteObject(bitmap);
return TRUE;
}
And I use "LoadImage()" instead of "LoadBitmap()", it is same problem.