SystemInformation::PenWindows Property
.NET Framework (current version)
Gets a value indicating whether the Microsoft Windows for Pen Computing extensions are installed.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Property Value
Type: System::Booleantrue if the Windows for Pen Computing extensions are installed; false if Windows for Pen Computing extensions are not installed.
The PenWindows property indicates whether the Microsoft Windows for Pen Computing extensions are installed.
The following code example lists all properties of the SystemInformation class in a ListBox and displays the current value of the property in a TextBox when a list item selected.
#using <System.Windows.Forms.dll> #using <System.Drawing.dll> #using <System.dll> using namespace System; using namespace System::Collections; using namespace System::ComponentModel; using namespace System::Drawing; using namespace System::Reflection; using namespace System::Windows::Forms; public ref class SystemInfoBrowserForm: public System::Windows::Forms::Form { private: System::Windows::Forms::ListBox^ listBox1; System::Windows::Forms::TextBox^ textBox1; public: SystemInfoBrowserForm() { this->SuspendLayout(); InitForm(); // Add each property of the SystemInformation class to the list box. Type^ t = System::Windows::Forms::SystemInformation::typeid; array<PropertyInfo^>^pi = t->GetProperties(); for ( int i = 0; i < pi->Length; i++ ) listBox1->Items->Add( pi[ i ]->Name ); textBox1->Text = String::Format( "The SystemInformation class has {0} properties.\r\n", pi->Length ); // Configure the list item selected handler for the list box to invoke a // method that displays the value of each property. listBox1->SelectedIndexChanged += gcnew EventHandler( this, &SystemInfoBrowserForm::listBox1_SelectedIndexChanged ); this->ResumeLayout( false ); } private: void listBox1_SelectedIndexChanged( Object^ /*sender*/, EventArgs^ /*e*/ ) { // Return if no list item is selected. if ( listBox1->SelectedIndex == -1 ) return; // Get the property name from the list item. String^ propname = listBox1->Text; if ( propname->Equals( "PowerStatus" ) ) { // Cycle and display the values of each property of the PowerStatus property. textBox1->Text = String::Concat( textBox1->Text, "\r\nThe value of the PowerStatus property is:" ); Type^ t = System::Windows::Forms::PowerStatus::typeid; array<PropertyInfo^>^pi = t->GetProperties(); for ( int i = 0; i < pi->Length; i++ ) { Object^ propval = pi[ i ]->GetValue( SystemInformation::PowerStatus, nullptr ); textBox1->Text = String::Format( "{0}\r\n PowerStatus.{1} is: {2}", textBox1->Text, pi[ i ]->Name, propval ); } } else { // Display the value of the selected property of the SystemInformation type. Type^ t = System::Windows::Forms::SystemInformation::typeid; array<PropertyInfo^>^pi = t->GetProperties(); PropertyInfo^ prop = nullptr; for ( int i = 0; i < pi->Length; i++ ) if ( pi[ i ]->Name == propname ) { prop = pi[ i ]; break; } Object^ propval = prop->GetValue( nullptr, nullptr ); textBox1->Text = String::Format( "{0}\r\nThe value of the {1} property is: {2}", textBox1->Text, propname, propval ); } } void InitForm() { // Initialize the form settings this->listBox1 = gcnew System::Windows::Forms::ListBox; this->textBox1 = gcnew System::Windows::Forms::TextBox; this->listBox1->Anchor = (System::Windows::Forms::AnchorStyles)(System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Left | System::Windows::Forms::AnchorStyles::Right); this->listBox1->Location = System::Drawing::Point( 8, 16 ); this->listBox1->Size = System::Drawing::Size( 172, 496 ); this->listBox1->TabIndex = 0; this->textBox1->Anchor = (System::Windows::Forms::AnchorStyles)(System::Windows::Forms::AnchorStyles::Top | System::Windows::Forms::AnchorStyles::Bottom | System::Windows::Forms::AnchorStyles::Right); this->textBox1->Location = System::Drawing::Point( 188, 16 ); this->textBox1->Multiline = true; this->textBox1->ScrollBars = System::Windows::Forms::ScrollBars::Vertical; this->textBox1->Size = System::Drawing::Size( 420, 496 ); this->textBox1->TabIndex = 1; this->ClientSize = System::Drawing::Size( 616, 525 ); this->Controls->Add( this->textBox1 ); this->Controls->Add( this->listBox1 ); this->Text = "Select a SystemInformation property to get the value of"; } }; [STAThread] int main() { Application::Run( gcnew SystemInfoBrowserForm ); }
.NET Framework
Available since 1.1
Available since 1.1
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