Getting the position of a child window

[SMurf]

Hi,
I'm trying to process the WM_SIZE message in my main window's WindowProc so that a child window (used for displaying images) has a scrollbar window underneath it (not actually "in" the child window). I've tried using GetWindowRect and setting the scrollbars window's Top value to the resulting RECT's top, but as the coordinates are relative to the screen this doesn't work properly. I was thinking of perhaps using MapWindowPoints in some way. Any ideas?

[novacain]

You could try the GetWindowRect and GetClientRect
then use ClientToScreen or ScreenToClient to convert to one set of cood.

Or look at ScrollDC or ScrollWindow.

[SMurf]

I figured it out!

Using the following code:-

GetWindowRect(hView, &rcView);
MapWindowPoints(HWND_DESKTOP, hwnd, (LPPOINT)&rcView, 2);

Gives me the child window's (hView) position relative to its parent (hwnd).