去玻璃

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ref : http://hi.baidu.com/lifuchao2008/blog/item/f23ea71eee047ffc1ad57640.html

VC实现去掉vista窗口的玻璃效果

最近发现以前的自绘皮肤窗口，在VISTA系统开启玻璃效果的情况下，非客户区的皮肤总是被那层玻璃盖着，甚感烦躁，经过查找资料，发现那个玻璃效果是VISTA下有个dwm.exe弄的，微软给出了相关API，可以自己定制某个窗口的效果。
http://msdn.microsoft.com/en-us/library/aa969540.aspx，该API的介绍，如果英文不好的话，可以用火狐浏览器翻译该网页，效果还不错。

如果编译器是vs2008以上的版本的话，代码非常简单，只需要在窗口初始化的地方加下如下代码：

    DWMNCRENDERINGPOLICY ncrp = DWMNCRP_DISABLED;
    DwmSetWindowAttribute(GetSafeHwnd(),DWMWA_NCRENDERING_POLICY,&ncrp,sizeof(ncrp));

再包含下#include <dwmapi.h>

如果编译环境低于VS2008并且没有 VISTA SDK的话是如下的代码:

由于编译环境中没有dwmapi.h文件，所以需要的一些定义就得自己加了，如下加了两个枚举。

enum DWMWINDOWATTRIBUTE
{
    DWMWA_NCRENDERING_ENABLED = 1,      // [get] Is non-client rendering enabled/disabled
        DWMWA_NCRENDERING_POLICY,           // [set] Non-client rendering policy
        DWMWA_TRANSITIONS_FORCEDISABLED,    // [set] Potentially enable/forcibly disable transitions
        DWMWA_ALLOW_NCPAINT,                // [set] Allow contents rendered in the non-client area to be visible on the DWM-drawn frame.
        DWMWA_CAPTION_BUTTON_BOUNDS,        // [get] Bounds of the caption button area in window-relative space.
        DWMWA_NONCLIENT_RTL_LAYOUT,         // [set] Is non-client content RTL mirrored
        DWMWA_FORCE_ICONIC_REPRESENTATION, // [set] Force this window to display iconic thumbnails.
        DWMWA_FLIP3D_POLICY,                // [set] Designates how Flip3D will treat the window.
        DWMWA_EXTENDED_FRAME_BOUNDS,        // [get] Gets the extended frame bounds rectangle in screen space
        DWMWA_LAST
};
typedef enum _DWMNCRENDERINGPOLICY {
    DWMNCRP_USEWINDOWSTYLE,
        DWMNCRP_DISABLED,
        DWMNCRP_ENABLED,
        DWMNCRP_LAST
} DWMNCRENDERINGPOLICY;

然后在动态链接库中得到去掉玻璃效果的函数(DwmSetWindowAttribute)进而执行该函数
    typedef HRESULT (WINAPI * TmpFun)(HWND,DWORD,LPCVOID,DWORD);
    HMODULE library = ::LoadLibrary("dwmapi.dll");

    TmpFun DwmSetWindowAttributeEX;
    if (0 != library)
    {
        DwmSetWindowAttributeEX = (TmpFun)::GetProcAddress(library,
            "DwmSetWindowAttribute");
        if (DwmSetWindowAttributeEX)
        {
            DWMNCRENDERINGPOLICY ncrp = DWMNCRP_DISABLED;
            (*DwmSetWindowAttributeEX)(GetSafeHwnd(),DWMWA_NCRENDERING_POLICY,&ncrp,sizeof(ncrp));

        }
        VERIFY(::FreeLibrary(library));
    }

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