IFeatureSupport::IsPresent Method (Object^, Version^)
.NET Framework (current version)
Determines whether the specified or newer version of the specified feature is currently available on the system.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Parameters
- feature
-
Type:
System::Object^
The feature to look for.
- minimumVersion
-
Type:
System::Version^
A Version representing the minimum version number of the feature to look for.
Return Value
Type: System::Booleantrue if the requested version of the feature is present; otherwise, false.
The following example uses the OSFeature implementation of IFeatureSupport and queries for the LayeredWindows feature. The version is checked to see if it is null, to determine whether the feature is present. The result is displayed in a text box. This code assumes textBox1 has been created and placed on a form.
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 ( myVersion != nullptr ) { textBox1->Text = "Layered windows feature is installed.\n"; } else { textBox1->Text = "Layered windows feature is not installed.\n"; } // This is an alternate way to check whether a feature is present. if ( OSFeature::Feature->IsPresent( OSFeature::LayeredWindows ) ) { textBox1->Text = String::Concat( textBox1->Text, "Again, layered windows feature is installed." ); } else { textBox1->Text = String::Concat( textBox1->Text, "Again, layered windows feature is not installed." ); } }
.NET Framework
Available since 1.1
Available since 1.1
Show: