ScrollBar.Minimum-Eigenschaft
Ruft die Untergrenze für Werte des bildlauffähigen Bereichs ab oder legt diese fest.
Namespace: System.Windows.Forms
Assembly: System.Windows.Forms (in system.windows.forms.dll)
Syntax
'Declaration
Public Property Minimum As Integer
'Usage
Dim instance As ScrollBar
Dim value As Integer
value = instance.Minimum
instance.Minimum = value
public int Minimum { get; set; }
public:
property int Minimum {
int get ();
void set (int value);
}
/** @property */
public int get_Minimum ()
/** @property */
public void set_Minimum (int value)
public function get Minimum () : int
public function set Minimum (value : int)
Eigenschaftenwert
Ein numerischer Wert. Der Standardwert ist 0.
Beispiel
Im folgenden Beispiel werden die abgeleiteten Klassen VScrollBar und HScrollBar verwendet und einige ihrer gemeinsamen Eigenschaften festgelegt. Die Maximum-Eigenschaften werden entsprechend der Height oder der Width des Image festgelegt, das dem übergeordneten Element, einer PictureBox, zugewiesen ist. Die LargeChange-Eigenschaft wird entsprechend der Größe des Bildfelds festgelegt, abzüglich der Höhe und Breite der Bildlaufleisten. Die SmallChange-Eigenschaft wird gleich dem LargeChange-Eigenschaftenwert geteilt durch 5 festgelegt. Schließlich werden die Value-Eigenschaftenwerte für beide Bildlaufleisten auf 0 festgelegt. Dadurch werden die vertikale und die horizontale Bildlaufleiste in einem Bildfeld angezeigt, in dem die obere linke Ecke von Image angezeigt wird. Sie können mit den Bildlaufleisten keinen Bildlauf über den Rand des Bildes hinaus durchführen, und bei einem LargeChange-Bildlauf verschiebt sich das Bild nur so weit, wie auch der im Bildfeld angezeigte Bereich verschoben wird. Fünf SmallChange-Bildläufe entsprechen dem Verschiebungsabstand eines LargeChange-Bildlaufs. In diesem Code wird davon ausgegangen, dass in einem Form eine PictureBox, eine HScrollBar, eine VScrollBar und ein Image erstellt wurden. Außerdem wird davon ausgegangen, dass ein Verweis auf den System.Drawing-Namespace hinzugefügt wurde. Zusätzlichen Code für die Erweiterung dieses Beispiels finden Sie in der Übersicht zur ScrollBar-Klasse.
Public Sub SetScrollBarValues()
' Set the Maximum, Minimum, LargeChange and SmallChange properties.
Me.vScrollBar1.Minimum = 0
Me.hScrollBar1.Minimum = 0
' If the offset does not make the Maximum less than zero, set its value.
If Me.pictureBox1.Image.Size.Width - pictureBox1.ClientSize.Width > 0 Then
Me.hScrollBar1.Maximum = Me.pictureBox1.Image.Size.Width - _
pictureBox1.ClientSize.Width
End If
' If the VScrollBar is visible, adjust the Maximum of the
' HSCrollBar to account for the width of the VScrollBar.
If Me.vScrollBar1.Visible Then
Me.hScrollBar1.Maximum += Me.vScrollBar1.Width
End If
Me.hScrollBar1.LargeChange = Me.hScrollBar1.Maximum / 10
Me.hScrollBar1.SmallChange = Me.hScrollBar1.Maximum / 20
' Adjust the Maximum value to make the raw Maximum value attainable by user interaction.
Me.hScrollBar1.Maximum += Me.hScrollBar1.LargeChange
' If the offset does not make the Maximum less than zero, set its value.
If Me.pictureBox1.Image.Size.Height - pictureBox1.ClientSize.Height > 0 Then
Me.vScrollBar1.Maximum = Me.pictureBox1.Image.Size.Height - _
pictureBox1.ClientSize.Height
End If
' If the HScrollBar is visible, adjust the Maximum of the
' VSCrollBar to account for the width of the HScrollBar.
If Me.hScrollBar1.Visible Then
Me.vScrollBar1.Maximum += Me.hScrollBar1.Height
End If
Me.vScrollBar1.LargeChange = Me.vScrollBar1.Maximum / 10
Me.vScrollBar1.SmallChange = Me.vScrollBar1.Maximum / 20
' Adjust the Maximum value to make the raw Maximum value attainable by user interaction.
Me.vScrollBar1.Maximum += Me.vScrollBar1.LargeChange
End Sub
public void SetScrollBarValues()
{
// Set the Maximum, Minimum, LargeChange and SmallChange properties.
this.vScrollBar1.Minimum = 0;
this.hScrollBar1.Minimum = 0;
// If the offset does not make the Maximum less than zero, set its value.
if( (this.pictureBox1.Image.Size.Width - pictureBox1.ClientSize.Width) > 0)
{
this.hScrollBar1.Maximum = this.pictureBox1.Image.Size.Width - pictureBox1.ClientSize.Width;
}
/* If the VScrollBar is visible, adjust the Maximum of the
HSCrollBar to account for the width of the VScrollBar. */
if(this.vScrollBar1.Visible)
{
this.hScrollBar1.Maximum += this.vScrollBar1.Width;
}
this.hScrollBar1.LargeChange = this.hScrollBar1.Maximum / 10;
this.hScrollBar1.SmallChange = this.hScrollBar1.Maximum / 20;
// Adjust the Maximum value to make the raw Maximum value attainable by user interaction.
this.hScrollBar1.Maximum += this.hScrollBar1.LargeChange;
// If the offset does not make the Maximum less than zero, set its value.
if( (this.pictureBox1.Image.Size.Height - pictureBox1.ClientSize.Height) > 0)
{
this.vScrollBar1.Maximum = this.pictureBox1.Image.Size.Height - pictureBox1.ClientSize.Height;
}
/* If the HScrollBar is visible, adjust the Maximum of the
VSCrollBar to account for the width of the HScrollBar.*/
if(this.hScrollBar1.Visible)
{
this.vScrollBar1.Maximum += this.hScrollBar1.Height;
}
this.vScrollBar1.LargeChange = this.vScrollBar1.Maximum / 10;
this.vScrollBar1.SmallChange = this.vScrollBar1.Maximum / 20;
// Adjust the Maximum value to make the raw Maximum value attainable by user interaction.
this.vScrollBar1.Maximum += this.vScrollBar1.LargeChange;
}
void SetScrollBarValues()
{
// Set the Maximum, Minimum, LargeChange and SmallChange properties.
this->vScrollBar1->Minimum = 0;
this->hScrollBar1->Minimum = 0;
// If the offset does not make the Maximum less than zero, set its value.
if ( (this->pictureBox1->Image->Size.Width - pictureBox1->ClientSize.Width) > 0 )
{
this->hScrollBar1->Maximum = this->pictureBox1->Image->Size.Width - pictureBox1->ClientSize.Width;
}
/* If the VScrollBar is visible, adjust the Maximum of the
HSCrollBar to account for the width of the VScrollBar. */
if ( this->vScrollBar1->Visible )
{
this->hScrollBar1->Maximum += this->vScrollBar1->Width;
}
this->hScrollBar1->LargeChange = this->hScrollBar1->Maximum / 10;
this->hScrollBar1->SmallChange = this->hScrollBar1->Maximum / 20;
// Adjust the Maximum value to make the raw Maximum value attainable by user interaction.
this->hScrollBar1->Maximum += this->hScrollBar1->LargeChange;
// If the offset does not make the Maximum less than zero, set its value.
if ( (this->pictureBox1->Image->Size.Height - pictureBox1->ClientSize.Height) > 0 )
{
this->vScrollBar1->Maximum = this->pictureBox1->Image->Size.Height - pictureBox1->ClientSize.Height;
}
/* If the HScrollBar is visible, adjust the Maximum of the
VSCrollBar to account for the width of the HScrollBar.*/
if ( this->hScrollBar1->Visible )
{
this->vScrollBar1->Maximum += this->hScrollBar1->Height;
}
this->vScrollBar1->LargeChange = this->vScrollBar1->Maximum / 10;
this->vScrollBar1->SmallChange = this->vScrollBar1->Maximum / 20;
// Adjust the Maximum value to make the raw Maximum value attainable by user interaction.
this->vScrollBar1->Maximum += this->vScrollBar1->LargeChange;
}
public void SetScrollBarValues()
{
// Set the Maximum, Minimum, LargeChange and SmallChange properties.
this.vScrollBar1.set_Minimum(0);
this.hScrollBar1.set_Minimum(0);
// If the offset does not make the Maximum less than zero,
// set its value.
if (this.pictureBox1.get_Image().get_Size().get_Width()
- pictureBox1.get_ClientSize().get_Width() > 0) {
this.hScrollBar1.set_Maximum(
this.pictureBox1.get_Image().get_Size().get_Width()
- pictureBox1.get_ClientSize().get_Width());
}
/* If the VScrollBar is visible, adjust the Maximum of the
HSCrollBar to account for the width of the VScrollBar.
*/
if (this.vScrollBar1.get_Visible()) {
this.hScrollBar1.set_Maximum(
this.hScrollBar1.get_Maximum() + this.vScrollBar1.get_Width());
}
this.hScrollBar1.set_LargeChange(this.hScrollBar1.get_Maximum() / 10);
this.hScrollBar1.set_SmallChange(this.hScrollBar1.get_Maximum() / 20);
// Adjust the Maximum value to make the raw Maximum value attainable
// by user interaction.
this.hScrollBar1.set_Maximum(
this.hScrollBar1.get_Maximum()
+ this.hScrollBar1.get_LargeChange());
// If the offset does not make the Maximum less than zero,
// set its value.
if (this.pictureBox1.get_Image().get_Size().get_Height()
- pictureBox1.get_ClientSize().get_Height() > 0) {
this.vScrollBar1.set_Maximum(
this.pictureBox1.get_Image().get_Size().get_Height()
- pictureBox1.get_ClientSize().get_Height());
}
/* If the HScrollBar is visible, adjust the Maximum of the
VSCrollBar to account for the width of the HScrollBar.
*/
if (this.hScrollBar1.get_Visible()) {
this.vScrollBar1.set_Maximum(this.vScrollBar1.get_Maximum()
+ this.hScrollBar1.get_Height());
}
this.vScrollBar1.set_LargeChange(this.vScrollBar1.get_Maximum() / 10);
this.vScrollBar1.set_SmallChange(this.vScrollBar1.get_Maximum() / 20);
// Adjust the Maximum value to make the raw Maximum value attainable
// by user interaction.
this.vScrollBar1.set_Maximum(
this.vScrollBar1.get_Maximum()
+ this.vScrollBar1.get_LargeChange());
} //SetScrollBarValues
Plattformen
Windows 98, Windows 2000 SP4, Windows CE, Windows Millennium Edition, Windows Mobile für Pocket PC, Windows Mobile für Smartphone, Windows Server 2003, Windows XP Media Center Edition, Windows XP Professional x64 Edition, Windows XP SP2, Windows XP Starter Edition
.NET Framework unterstützt nicht alle Versionen sämtlicher Plattformen. Eine Liste der unterstützten Versionen finden Sie unter Systemanforderungen.
Versionsinformationen
.NET Framework
Unterstützt in: 2.0, 1.1, 1.0
.NET Compact Framework
Unterstützt in: 2.0, 1.0
Siehe auch
Referenz
ScrollBar-Klasse
ScrollBar-Member
System.Windows.Forms-Namespace
ScrollBar.Maximum-Eigenschaft