如果使用SetLayeredWindowAttributes设置为透明，则对话框不会保持最顶部 [英] Dialog not remaing topmost if set transparent using SetLayeredWindowAttributes

问题描述

我试图使我的window(dlg)透明且最顶部，但不起作用.这是我的代码:-

I am trying to make my window(dlg) transparent and top most but doesn''t work. Here is my code:-

SetWindowLong(m_hWnd, GWL_EXSTYLE,
        GetWindowLong(m_hWnd, GWL_EXSTYLE) | WS_EX_LAYERED | WS_EX_TOPMOST );
// Make this window 70% alpha
SetLayeredWindowAttributes(m_hWnd, 0, (255 * 50) / 100, LWA_ALPHA);

SetWindowPos( &wndTopMost, TRANSP_X_POS, TRANSP_Y_POS, TRANSP_WDTH, TRANSP_HGHT, SWP_NOCOPYBITS | SWP_NOREPOSITION );

有任何建议吗?

Any suggestions?

推荐答案

您可以尝试致电SetForegroundWindow(GetSafeHwnd()):)

其实我的问题是由于使用OpenGL.

我同时使用Open GL和MFC.
在OpenGl上加载时(应用程序之间的代码.....)
g_hDC = GetDC(g_hWnd);
PixelFormat = ChoosePixelFormat(g_hDC，& pfd);
SetPixelFormat(g_hDC，PixelFormat，& pfd);
g_hRC = wglCreateContext(g_hDC);
wglMakeCurrent(g_hDC，g_hRC);

此时wglMakeCurrent(g_hDC，g_hRC);系统光标的长度被剪裁.(我认为是这样)

在此之后，如果我尝试在mfc中加载具有大尺寸字符串(8至10个字符)的systemcursor .....游标未完整显示.

actually my problem was due to the ussage of OpenGL .

I am using Both Open GL and MFC .
when on OpenGl Application is loaded( code ..... in between )
g_hDC = GetDC( g_hWnd );
PixelFormat = ChoosePixelFormat( g_hDC, &pfd );
SetPixelFormat( g_hDC, PixelFormat, &pfd);
g_hRC = wglCreateContext( g_hDC );
wglMakeCurrent( g_hDC, g_hRC );

at this point wglMakeCurrent( g_hDC, g_hRC ); system cursor length is clipped.(i think interanlly)

After this if i try to load systemcursor with a string of large size( 8 to 10 char) in mfc ..... cursor is not shown to full length.

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