如何撤消 SetWindowDisplayAffinity 方法?

Yev*_*lov 0 .net c# user32 winforms

我有一个 C# 应用程序可以防止屏幕捕获,但我想禁用“黑屏”。

这是我的代码:

[DllImport("user32.dll")]
public static extern uint SetWindowDisplayAffinity(IntPtr hWnd, uint dwAffinity);

protected override void OnLoad(EventArgs e)
{
    base.OnLoad(e);
    SetWindowDisplayAffinity(this.Handle, WDA_MONITOR);
}
Run Code Online (Sandbox Code Playgroud)

我可以通过什么方式禁用它?

Rez*_*aei 5

使用SetWindowDisplayAffinity,从捕获中排除窗口,传递WDA_EXCLUDEFROMCAPTUREWDA_MONITOR作为参数,并撤消(包含在捕获中),传递WDA_NONE

[DllImport("user32.dll")]
static extern uint SetWindowDisplayAffinity(IntPtr hWnd, uint dwAffinity);
const uint WDA_NONE = 0x00000000;
const uint WDA_MONITOR = 0x00000001;
const uint WDA_EXCLUDEFROMCAPTURE = 0x00000011;

private void includeButton_Click(object sender, EventArgs e)
{
    SetWindowDisplayAffinity(this.Handle, WDA_NONE);
}

private void excludeButton_Click(object sender, EventArgs e)
{
    SetWindowDisplayAffinity(this.Handle, WDA_MONITOR);
}
Run Code Online (Sandbox Code Playgroud)

以下屏幕截图显示该窗口包含在捕获中:

包括

以下屏幕截图显示该窗口被排除在捕获之外:

排除