TrackBar::TickFrequency Property
Gets or sets a value that specifies the delta between ticks drawn on the control.
Assembly: System.Windows.Forms (in System.Windows.Forms.dll)
Property Value
Type: System::Int32The numeric value representing the delta between ticks. The default is 1.
For a TrackBar with a large range of values between the Minimum and the Maximum properties, it might be impractical to draw all the ticks for values on the control. For example, if you have a control with a range of 100, passing in a value of 5 here causes the control to draw 20 ticks. In this case, each tick represents five units in the range of values.
The following code example displays a form that contains a TrackBar control and a TextBox control. The example demonstrates setting the Maximum, TickFrequency, LargeChange, and SmallChange properties and handling the Scroll event. The TextBox contents are updated to the Value property value when the Scroll event occurs.
using namespace System; using namespace System::Drawing; using namespace System::Windows::Forms; public ref class Form1: public System::Windows::Forms::Form { private: System::Windows::Forms::TrackBar^ trackBar1; System::Windows::Forms::TextBox^ textBox1; public: Form1() { this->textBox1 = gcnew System::Windows::Forms::TextBox; this->trackBar1 = gcnew System::Windows::Forms::TrackBar; // TextBox for TrackBar::Value update. this->textBox1->Location = System::Drawing::Point( 240, 16 ); this->textBox1->Size = System::Drawing::Size( 48, 20 ); // Set up how the form should be displayed and add the controls to the form. this->ClientSize = System::Drawing::Size( 296, 62 ); array<System::Windows::Forms::Control^>^formControls = {this->textBox1,this->trackBar1}; this->Controls->AddRange( formControls ); this->Text = "TrackBar Example"; // Set up the TrackBar. this->trackBar1->Location = System::Drawing::Point( 8, 8 ); this->trackBar1->Size = System::Drawing::Size( 224, 45 ); this->trackBar1->Scroll += gcnew System::EventHandler( this, &Form1::trackBar1_Scroll ); // The Maximum property sets the value of the track bar when // the slider is all the way to the right. trackBar1->Maximum = 30; // The TickFrequency property establishes how many positions // are between each tick-mark. trackBar1->TickFrequency = 5; // The LargeChange property sets how many positions to move // if the bar is clicked on either side of the slider. trackBar1->LargeChange = 3; // The SmallChange property sets how many positions to move // if the keyboard arrows are used to move the slider. trackBar1->SmallChange = 2; } private: void trackBar1_Scroll( Object^ /*sender*/, System::EventArgs^ /*e*/ ) { // Display the trackbar value in the text box. textBox1->Text = String::Concat( "", trackBar1->Value ); } }; [STAThread] int main() { Application::Run( gcnew Form1 ); }
Available since 1.1