如何在Windows中强制进行显示检测? [英] How can I force display detection in Windows?

问题描述

我经常用附加的KVM切换器将Windows 7 PC引导到另一台计算机上来启动.当我切换到启动的PC时，显示分辨率错误(并且未检测到第二台连接的显示器).

I often boot my Windows 7 PC with the attached KVM switch focused on another computer. When I switch to the booted PC, the display resolution is wrong (and the second attached monitor is not detected).

我可以通过右键单击桌面，选择Screen Resolution并单击Detect来更正此问题.这使Windows可以检测连接的显示器并调整为最佳分辨率.

I can correct this by right-clicking the desktop, choosing Screen Resolution and clicking Detect. This makes Windows detect attached displays and adjust to the most optimal resolution.

我想编写一个小的实用程序来自动执行此操作.我应该使用哪个Win32 API调用或C#对象?

I would like to write a small utility to do this automatically. Which Win32 API call or C# object should I use?

推荐答案

您可以尝试:

1. 您可以使用Spy ++搜索打开的窗口，并查看它们的属性和消息.
2. 使用过程启动"rundll32.exe shell32.dll，Control_RunDLL desk.cpl"，或尝试直接调用它以查看是否可以获得窗口句柄，请查看下面的链接以获取想法.
3. 使用代码将按钮发送到外部外部应用程序" ，并对其进行修改以搜索标题为屏幕分辨率"的窗口，并向标题为检测"标题的子窗口发送BN_CLICK.
4. 由于计算机已经启动，因此您可能需要在登录时自动将其启动，为此请使用任务计划程序.

1. You can use Spy++ to search for the windows that are open and take a look at their properties and messages.
2. Use process to start "rundll32.exe shell32.dll,Control_RunDLL desk.cpl" or experiment with calling it directly to see if you can get a window handle, check below link for ideas.
3. Use the code "send button click to external app" and modify it to search for a window with caption "Screen Resolution" and send a BN_CLICK to the childwindow with the caption "Detect".
4. Since the computer is already on you might want to fire it up automatically on logon, for that use the task scheduler.

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