c++ - DwmEnableComposition 未启用 Aero

Question

我正在尝试为我的应用程序启用 Aero(一个与浏览器一起运行“单一进程”的 Firefox 插件)，但我没有这样做。操作系统为 Windows 7 64 位。

这是代码:

BOOL bEnabled = FALSE;
if(SUCCEEDED(DwmIsCompositionEnabled(&bEnabled)) && !bEnabled){         
    HRESULT hres = DwmEnableComposition(DWM_EC_ENABLECOMPOSITION);
}

DwmEnableComposition 应该启用组合但它没有，函数返回:

S_OK

任何帮助将不胜感激，谢谢!

Answer 1

您不能启用 DWM 组合；您只能请求将其禁用。当您不需要关闭它时，您可以调用

DwmEnableComposition(DWM_EC_ENABLECOMPOSITION);

来自 MSDN:

DWM composition will be automatically enabled when all processes that have disabled composition have called DwmEnableComposition to enable it or have been terminated.

您不必启用它，您只是宣布您不再需要禁用它。 (Microsoft 不允许您启用组合的原因是 you can't be trusted to not try to do it. )

你也应该在落后时放弃。再次来自 MSDN:

Note This function is deprecated as of Windows 8 Consumer Preview. DWM can no longer be programmatically disabled.