BOOL CMFCApplication3Dlg: : OnEraseBkgnd (pDC) CDC * 
{
//TODO: add the message handler code and/or invoke the default 
CBitmap bitmap. 
Bitmap. LoadBitmapW (IDB_BITMAP1); 
CClientDC CDC (this); 
The CDC comdc; 
Comdc. CreateCompatibleDC (& amp; The CDC); 
Comdc. SelectObject (& amp; Bitmap); 

//generated BITMAP 
BITMAP bit; 
Bitmap. GetBitmap (& amp; Bit); 

//client area 
CRect the rect. 
GetClientRect (the rect); 

//the DC of the client area are used to draw the generated BITMAP, and adapt to the window size 
The CDC StretchBlt (0, 0, the rect. Width (), the rect. Height (), & amp; Comdc, 0, 0, bit bmWidth, bit. BmHeight, SRCCOPY); 
return TRUE; 
//return CDialogEx: : OnEraseBkgnd (pDC); 
} 

Although you can run, and can also display all images, but it can't fully display button, and transform, at run time button was gone, total want to find a button with the mouse roughly the location can be displayed,,,,

CodePudding user response:

Can response to a WM_PAINT message