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HWND_TOP works, but HWND_TOPMOST does not

RonHiler · 2013-09-04T06:03:43

Hey guys, I have a weird problem I can't figure out: This code is meant to calculate a position of a window and put it there. And it pretty much works just fine, the window appears where it is supposed to be. The only issue with it is I really need the final line to make it a topmost window. case WM_NOTIFY: { if (wParam == MEW_TOOLTIPWINDOW || wParam == EW_TOOLTIPWINDOW) { if (((NMHDR*)lParam)->code == EN_REQUESTRESIZE) { ReqResize = (REQRESIZE*)lParam; GetWindowRect(EnhancementWindowHandle, &WindowRect); GetCursorPos(&CursorPoint); X = CursorPoint.x - WindowRect.left+10; Y = CursorPoint.y - WindowRect.top+10; //don't fall off the bottom of the main window if (Y + (ReqResize->rc.bottom - ReqResize->rc.top) > (WindowRect.bottom - WindowRect.top)) Y = (WindowRect.bottom - WindowRect.top) - (ReqResize->rc.bottom - ReqResize->rc.top); //also, don't go past the right side of the main window if (X + (ReqResize->rc.right - ReqResize->rc.left) > (WindowRect.right - WindowRect.left)) X = (CursorPoint.x - WindowRect.left) - (ReqResize->rc.right - ReqResize->rc.left) - 10; //at this point we should be entirely inside the window, unless the text is so large the tooltip is higher than the entire window itself. // TODO: Handle fringe case of too tall a tooltip window... SetWindowPos(ReqResize->nmhdr.hwndFrom, HWND_TOP, X, Y, ReqResize->rc.right - ReqResize->rc.left, ReqResize->rc.bottom - ReqResize->rc.top, SWP_SHOWWINDOW); } } return 0; } so I changed the final line to such: SetWindowPos(ReqResize->nmhdr.hwndFrom, HWND_TOPMOST, X, Y, ReqResize->rc.right - ReqResize->rc.left, ReqResize->rc.bottom - ReqResize->rc.top, SWP_SHOWWINDOW); That's the only change I made, just changed HWND_TOP to HWND_TOPMOST. And the result is the window no longer resizes or moves. It is in it's default size at parent window 0,0. The return value of the function does not indicate a failure (return is non-zero), it just doesn't do what I expect it to do. I even tried forcing it to move: SetWindowPos(ReqResize->nmhdr.hwndFrom, HWND_TOPMOST, 100, 100, 500, 500, SWP_SHOWWINDOW); Same thing, it is ignoring the x, y, sizex, and sizey parameters when using HWND_TOPMOST Any ideas why? What am I doing wrong?