如何在窗口的WM_WINDOWPOSCHANGED消息响应函数里面知道该窗口跳到顶端去了

[悟迟]

如何在窗口的WM_WINDOWPOSCHANGED消息响应函数里面知道该窗口跳到顶端去了

一个对话框被另一个程序调BringWindowToTop函数跳到最顶端，
或者被鼠标键盘等操作点到顶端
如何让它跳出来时做点事情

[Eleven]

GetForegroundWindow() ??
枚举窗口EnumWindows()得到第一个窗口判断是否和你指定的窗口HWND相等？

[yuucyf]

在OnWindowPosChanged应该这样就可以吧？
if (!(lpwndpos->flags & SWP_NOACTIVATE))
{
}

SWP_NOACTIVATE Does not activate the window. If this flag is not set, the window is activated and moved to the top of either the topmost or non-topmost group (depending on the setting of the hWndInsertAfter parameter).

hwndInsertAfter
Specifies the position of the window in Z order (front-to-back position). This member can be a handle to the window behind which this window is placed, or can be one of the special values listed with the SetWindowPos function.

[写不动代码的人]

HWND desWnd = ::GetDesktopWindow();
HWND topWnd = ::GetTopWindow(desWnd);
if(topWnd == this->m_hWnd)
{
//说明自己在顶层
}

[悟迟]

补充，在该函数中，除了窗口跳出来需要做些事情，其它动作不需要相应

[wozhaosummer]

通过观察发现，鼠标点出该窗口，键盘切换出，BringWindowToTop掉出该窗口

void OnWindowPosChanged(WINDOWPOS* lpwndpos)里面可以这样写，
	BOOL bSWP_DRAWFRAME      = ((lpwndpos->flags & SWP_DRAWFRAME     ) == SWP_DRAWFRAME     );
	BOOL bSWP_FRAMECHANGED   = ((lpwndpos->flags & SWP_FRAMECHANGED  ) == SWP_FRAMECHANGED  );
	BOOL bSWP_HIDEWINDOW     = ((lpwndpos->flags & SWP_HIDEWINDOW    ) == SWP_HIDEWINDOW    );
	BOOL bSWP_NOACTIVATE     = ((lpwndpos->flags & SWP_NOACTIVATE    ) == SWP_NOACTIVATE    );
	BOOL bSWP_NOCOPYBITS     = ((lpwndpos->flags & SWP_NOCOPYBITS    ) == SWP_NOCOPYBITS    );
	BOOL bSWP_NOMOVE         = ((lpwndpos->flags & SWP_NOMOVE        ) == SWP_NOMOVE        );
	BOOL bSWP_NOOWNERZORDER  = ((lpwndpos->flags & SWP_NOOWNERZORDER ) == SWP_NOOWNERZORDER );
	BOOL bSWP_NOREDRAW       = ((lpwndpos->flags & SWP_NOREDRAW      ) == SWP_NOREDRAW      );
	BOOL bSWP_NOREPOSITION   = ((lpwndpos->flags & SWP_NOREPOSITION  ) == SWP_NOREPOSITION  );
	BOOL bSWP_NOSENDCHANGING = ((lpwndpos->flags & SWP_NOSENDCHANGING) == SWP_NOSENDCHANGING);
	BOOL bSWP_NOSIZE         = ((lpwndpos->flags & SWP_NOSIZE        ) == SWP_NOSIZE        );
	BOOL bSWP_NOZORDER       = ((lpwndpos->flags & SWP_NOZORDER      ) == SWP_NOZORDER      );
	BOOL bSWP_SHOWWINDOW     = ((lpwndpos->flags & SWP_SHOWWINDOW    ) == SWP_SHOWWINDOW    );
	BOOL bTop = (
		bSWP_DRAWFRAME      == FALSE && 
		bSWP_FRAMECHANGED   == FALSE && 
		bSWP_HIDEWINDOW     == FALSE && 
		bSWP_NOACTIVATE     == FALSE && 
		bSWP_NOCOPYBITS     == FALSE && 
		bSWP_NOMOVE         == TRUE  && 
		bSWP_NOOWNERZORDER  == FALSE && 
		bSWP_NOREDRAW       == FALSE && 
		bSWP_NOREPOSITION   == FALSE && 
		bSWP_NOSENDCHANGING == FALSE && 
		bSWP_NOSIZE         == TRUE  && 
		bSWP_NOZORDER       == FALSE && 
		bSWP_SHOWWINDOW     == FALSE);
if (bTop == TRUE)
{
    //  感觉这个方法有些不是很优美，不知道有没有啥缺陷或者更好的方法
}