在visual basic中模拟windowskey+L? [英] Simulate windowskey+L in visual basic?

问题描述

我想在visual basic中模拟WindowsKey + L(锁定控制台的快捷方式)并将其绑定到一个函数.所以当这个函数被调用时，它会锁定控制台.我可以这样做吗?

I want to simulate WindowsKey + L (The short cut to lock the console) in visual basic and bind it to a function. So when this function is called it will lock the console. Can I do this?

推荐答案

模拟热键是错误的方法.您需要做的就是调用 LockWorkStation 功能.这与按 Ctrl+Alt+Del 并选择锁定工作站"或使用 Win+L 热键，除了您可以通过代码以编程方式完成.

Simulating the hotkey is the wrong approach. All you need to do is call the LockWorkStation function. This has the same result as pressing Ctrl+Alt+Del and selecting "Lock Workstation", or using the Win+L hotkey, except that you can do it programmatically through code.

要从 VB 应用程序调用此函数，您需要编写一个声明，如下所示:

To call this function from a VB application, you'll need to write a declaration, like so:

Private Declare Function LockWorkStation Lib "user32.dll" () As Long

在定义任何过程之前，您需要将该声明放在模块文件的顶部.然后，在其中一个过程中，您可以调用该函数.例如:

You'll want to place that declaration at the top of your module file, before any procedures are defined. Then, inside one of the procedures, you can call the function. For example:

Private Sub LockComputer()
    LockWorkStation
End Sub

更好的代码会检查LockWorkStation 的返回值是否有错误代码.返回值 0 表示错误.在 VB 中检查 Win32 错误的标准方法 Err.LastDllError 将为您提供有关究竟出了什么问题的更多信息.

Even better code would check the return value of LockWorkStation for an error code. A return value of 0 indicates an error. The standard way of checking for Win32 errors in VB, Err.LastDllError, will give you more information about what exactly went wrong.

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