OldProcessListWndProc ProcessListWndProc

INT_PTR CALLBACK ProcessListWndProc ( HWND  hWnd, UINT  message, WPARAM  wParam, LPARAM  lParam  ) Definition at line 32 of file proclist.c. Referenced by ProcessPageWndProc(). { HBRUSH hbrBackground; RECT rcItem; RECT rcClip; HDC hDC; int DcSave; switch (message) { case WM_ERASEBKGND: /* * The list control produces a nasty flicker * when the user is resizing the window because * it erases the background to white, then * paints the list items over it. * * We will clip the drawing so that it only * erases the parts of the list control that * show only the background. */ /* * Get the device context and save it's state * to be restored after we're done */ hDC = (HDC) wParam; DcSave = SaveDC(hDC); /* * Get the background brush */ hbrBackground = (HBRUSH)(LONG_PTR) GetClassLongPtrW(hWnd, GCL_HBRBACKGROUND); /* * Calculate the clip rect by getting the RECT * of the first and last items and adding them up. * * We also have to get the item's icon RECT and * subtract it from our clip rect because we don't * use icons in this list control. */ rcClip.left = LVIR_BOUNDS; SendMessageW(hWnd, LVM_GETITEMRECT, 0, (LPARAM)&rcClip); rcItem.left = LVIR_BOUNDS; SendMessageW(hWnd, LVM_GETITEMRECT, ListView_GetItemCount(hWnd) - 1, (LPARAM)&rcItem); rcClip.bottom = rcItem.bottom; rcClip.right = rcItem.right; rcItem.left = LVIR_ICON; SendMessageW(hWnd, LVM_GETITEMRECT, 0, (LPARAM)&rcItem); rcClip.left = rcItem.right; /* * Now exclude the clip rect */ ExcludeClipRect(hDC, rcClip.left, rcClip.top, rcClip.right, rcClip.bottom); /* * Now erase the background * * * FIXME: Should I erase it myself or * pass down the updated HDC and let * the default handler do it? */ GetClientRect(hWnd, &rcItem); FillRect(hDC, &rcItem, hbrBackground); /* * Now restore the DC state that we * saved earlier */ RestoreDC(hDC, DcSave); return TRUE; } /* * We pass on all messages except WM_ERASEBKGND */ return CallWindowProcW(OldProcessListWndProc, hWnd, message, wParam, lParam); }