Scroll Height of a child window using Windows API?

Question

Does anyone know how to get the height of a scrollable child window using Windows API? I've found GetWindowRect but that appears to only return the RECT of the "visible" area but I want the RECT of the entire "scrollable" child window. This window is a 3rd party window so I would need to use, I'm assuming, the User32 WinAPI functions.

Thanks!

Answer 1

The best you can do is to call GetScrollInfo.

SCROLLINFO si = {sizeof(SCROLLINFO), SIF_ALL};
GetScrollInfo(hWndChild, SB_VERT, &si);