TrackBar.TickFrequency プロパティ
コントロールに描画された目盛り間のデルタを指定する値を取得または設定します。
Public Property TickFrequency As Integer
[C#]
public int TickFrequency {get; set;}
[C++]
public: __property int get_TickFrequency();public: __property void set_TickFrequency(int);
[JScript]
public function get TickFrequency() : int;public function set TickFrequency(int);
プロパティ値
目盛り間のデルタを表す数値。既定値は 1 です。
解説
Minimum から Maximum までの値の範囲が大きい TrackBar の場合、コントロール上の値ごとに目盛りをすべて描画していくのは実用的とは言えません。たとえば、範囲が 100 のコントロールがある場合に値 5 を指定すると、コントロールは 20 個の目盛りを描画します。この場合の各目盛りは、値の範囲で、値 5 つを 1 つの単位として示しています。
使用例
[Visual Basic, C#, C++] TrackBar コントロールと TextBox コントロールが配置されたフォームを表示する例を次に示します。この例では、 Maximum 、 TickFrequency 、 LargeChange 、 SmallChange の各プロパティを設定して、 Scroll イベントを処理しています。 TextBox の内容は、 Scroll イベントが発生したときに、 Value プロパティの値に更新されます。
Imports System
Imports System.Drawing
Imports System.Windows.Forms
Public Class Form1
Inherits System.Windows.Forms.Form
Private WithEvents trackBar1 As System.Windows.Forms.TrackBar
Private textBox1 As System.Windows.Forms.TextBox
<System.STAThread()> _
Public Shared Sub Main()
System.Windows.Forms.Application.Run(New Form1)
End Sub 'Main
Public Sub New()
Me.textBox1 = New System.Windows.Forms.TextBox
Me.trackBar1 = New System.Windows.Forms.TrackBar
' TextBox for TrackBar.Value update.
Me.textBox1.Location = New System.Drawing.Point(240, 16)
Me.textBox1.Size = New System.Drawing.Size(48, 20)
' Set up how the form should be displayed and add the controls to the form.
Me.ClientSize = New System.Drawing.Size(296, 62)
Me.Controls.AddRange(New System.Windows.Forms.Control() {Me.textBox1, Me.trackBar1})
Me.Text = "TrackBar Example"
' Set up the TrackBar.
Me.trackBar1.Location = New System.Drawing.Point(8, 8)
Me.trackBar1.Size = New System.Drawing.Size(224, 45)
' 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
End Sub 'New
Private Sub trackBar1_Scroll(ByVal sender As Object, _
ByVal e As System.EventArgs) Handles trackBar1.Scroll
' Display the trackbar value in the text box.
textBox1.Text = trackBar1.Value
End Sub
End Class 'Form1
[C#]
using System;
using System.Drawing;
using System.Windows.Forms;
public class Form1 : System.Windows.Forms.Form
{
private System.Windows.Forms.TrackBar trackBar1;
private System.Windows.Forms.TextBox textBox1;
[STAThread]
static void Main()
{
Application.Run(new Form1());
}
public Form1()
{
this.textBox1 = new System.Windows.Forms.TextBox();
this.trackBar1 = new System.Windows.Forms.TrackBar();
// TextBox for TrackBar.Value update.
this.textBox1.Location = new System.Drawing.Point(240, 16);
this.textBox1.Size = new System.Drawing.Size(48, 20);
// Set up how the form should be displayed and add the controls to the form.
this.ClientSize = new System.Drawing.Size(296, 62);
this.Controls.AddRange(new System.Windows.Forms.Control[] {this.textBox1,this.trackBar1});
this.Text = "TrackBar Example";
// Set up the TrackBar.
this.trackBar1.Location = new System.Drawing.Point(8, 8);
this.trackBar1.Size = new System.Drawing.Size(224, 45);
this.trackBar1.Scroll += new System.EventHandler(this.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 = "" + trackBar1.Value;
}
}
[C++]
using namespace System;
using namespace System::Drawing;
using namespace System::Windows::Forms;
public __gc class Form1 : public System::Windows::Forms::Form {
private:
System::Windows::Forms::TrackBar* trackBar1;
System::Windows::Forms::TextBox* textBox1;
public:
Form1() {
this->textBox1 = new System::Windows::Forms::TextBox();
this->trackBar1 = new 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);
System::Windows::Forms::Control* formControls[] = {
this->textBox1, this->trackBar1};
this->Controls->AddRange(formControls);
this->Text = S"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 += new
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(S"", __box(trackBar1->Value));
}
};
[STAThread]
int main() {
Application::Run(new Form1());
}
[JScript] JScript のサンプルはありません。Visual Basic、C#、および C++ のサンプルを表示するには、このページの左上隅にある言語のフィルタ ボタン .gif)
をクリックします。
必要条件
プラットフォーム: Windows 98, Windows NT 4.0, Windows Millennium Edition, Windows 2000, Windows XP Home Edition, Windows XP Professional, Windows Server 2003 ファミリ, .NET Compact Framework - Windows CE .NET