在不同的桌面上显示一个窗口

问题描述

我有两个问题。

我有一个应用程序，它在另一个桌面上显示一个全屏窗口。问题是当桌面切换到显示对话框时，新桌面背景会暂时显示，然后只显示全屏窗口。

I have an application which shows a full screen window in a different desktop. The issue is when the desktop is switched to show the dialog, the new desktop background is visible for a moment and then only the full screen window is showing.

问题1：

我的代码类似于下面的代码段。这是切换桌面的正确方法吗？

My code is similar to below code snippet. Is this correct way to switch desktop?

if( !::SetThreadDesktop(hNewDesk))
 {
    LogError( "SetThreadDesktop() failed" );
	return;
 }
 if (!::SwitchDesktop(hNewDesk))
  {
    LogError( "SwitchDesktop() failed" );
    return;
 }

问题2：

我知道如何以不同的方式启动应用程序桌面使用CreateProcess（）而不切换到那个桌面。我想在另一个桌面上创建一个窗口而不切换到那个桌面。例如桌面1和桌面2.我想在桌面2中从桌面创建完整的
屏幕窗口1，无需切换到桌面2，以便在调用SwitchDesktop（）时桌面2中已显示该窗口。任何人都可以帮我这个吗？

I know how to start an application in a different desktop using CreateProcess() without switching to that Desktop.I wanted to create a Window in another desktop without switching to that desktop.For example Desktop 1 and Desktop 2. I wanted to create full screen window in Desktop 2 from Desktop 1 without switching to Desktop 2 so that the window is already visible in Desktop 2 when SwitchDesktop() is called. Could anyone help me in this?

谢谢，Renjith VR

Thanks, Renjith V R

推荐答案

您只能使用SwitchDesktop（）来更改桌面。除非您希望当前线程使用切换桌面，否则无需调用SetThreadDesktop（）。

You can use SwitchDesktop() only to change desktops. There is no need to call SetThreadDesktop() unless you want the current thread to use the switched desktop.

问题2：

我认为最简单答案是在目标桌面上启动一个应用程序，让该应用程序为您绘制窗口 代表你。我看到的唯一问题是你不知道这需要多长时间。

I think the easiest answer is to launch an application in the target desktop and let that application draw the window for you  on your behalf. The only issue I see is that you won't know how long this will take.

如果你想使用当前桌面上的程序在目标桌面上绘制一个窗口，那么你在打开窗口或启动消息泵的任何调用之前，需要调用SetThreadDesktop（）
。 Thi s
需要在您的计划中尽早完成。

If you want to draw a window in the target desktop using the program in the current desktop, then you do need to call SetThreadDesktop()before any call that opens a window or starts a message pump. Thisneeds to be done very early in your program.

我很好奇你是什么问题试图解决。你为什么一开始使用桌面？

I'm curious what problem you are trying to solve. Why are you using a desktop in the first place?

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