この質問は私の以前の質問に関連しています。
I have an MFC (VC6) MDI Application which has several MDI child windows acting as different views for one document.
Is it possible to set one of those frames to stay on top of the others?
I have tried to call
SetWindowPos(
&GetParentFrame()->wndTopMost,
0, 0, 0, 0,
SWP_NOMOVE | SWP_NOSIZE);
and
ModifyStyleEx(0, WS_EX_TOPMOST);
from the CMDIChildWnd but neither appears to work.