OSFeature.LayeredWindows 字段
重要
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表示分层的、顶级窗口功能。 此字段为只读。
public: static initonly System::Object ^ LayeredWindows;C#
public static readonly object LayeredWindows; staticval mutable LayeredWindows : objPublic Shared ReadOnly LayeredWindows As Object 以下示例确定当前系统是否支持分层窗口。 基类方法 IsPresent 被调用 作为 LayeredWindows 要查找的功能。 结果显示在文本框中。 此代码假定 textBox1 已实例化并放置在窗体上。
private:
void LayeredWindows()
{
// Gets the version of the layered windows feature.
Version^ myVersion = OSFeature::Feature->GetVersionPresent(
OSFeature::LayeredWindows );
// Prints whether the feature is available.
if ( OSFeature::Feature->IsPresent( OSFeature::LayeredWindows ) )
{
textBox1->Text = "Layered windows feature is installed.";
}
else
{
textBox1->Text = "Layered windows feature is not installed.";
}
}
C#
private void LayeredWindows() {
// Gets the version of the layered windows feature.
Version myVersion =
OSFeature.Feature.GetVersionPresent(OSFeature.LayeredWindows);
// Prints whether the feature is available.
if (OSFeature.Feature.IsPresent(OSFeature.LayeredWindows))
textBox1.Text = "Layered windows feature is installed.";
else
textBox1.Text = "Layered windows feature is not installed.";
}
Private Sub LayeredWindows()
' Gets the version of the layered windows feature.
Dim myVersion As Version = _
OSFeature.Feature.GetVersionPresent(OSFeature.LayeredWindows)
' Prints whether the feature is available.
If OSFeature.Feature.IsPresent(OSFeature.LayeredWindows) Then
textBox1.Text = "Layered windows feature is installed."
Else
textBox1.Text = "Layered windows feature is not installed."
End If
End Sub
操作系统可将分层窗口设为透明或半透明。 Windows 2000 中首次引入了对分层窗口的支持。
若要确定是否安装了分层 Windows 功能，请使用 Feature 属性调用基类方法IsPresentLayeredWindows，作为要查找的功能。
或者，可以通过调用 GetVersionPresent 方法来检查来查看是否安装了该功能，并将 LayeredWindows 作为要查找的功能。
| 产品 | 版本 |
|---|---|
| .NET Framework | 1.1, 2.0, 3.0, 3.5, 4.0, 4.5, 4.5.1, 4.5.2, 4.6, 4.6.1, 4.6.2, 4.7, 4.7.1, 4.7.2, 4.8, 4.8.1 |
| Windows Desktop | 3.0, 3.1, 5, 6, 7, 8, 9, 10 |
