SizeF-Struktur
Speichert ein geordnetes Paar von Gleitkommazahlen, i. d. R. die Breite und Höhe eines Rechtecks.
Namespace: System.Drawing
Assembly: System.Drawing (in system.drawing.dll)
Syntax
'Declaration
<SerializableAttribute> _
<ComVisibleAttribute(True)> _
Public Structure SizeF
'Usage
Dim instance As SizeF
[SerializableAttribute]
[ComVisibleAttribute(true)]
public struct SizeF
[SerializableAttribute]
[ComVisibleAttribute(true)]
public value class SizeF
/** @attribute SerializableAttribute() */
/** @attribute ComVisibleAttribute(true) */
public final class SizeF extends ValueType
JScript unterstützt die Verwendung von Strukturen, aber nicht die Deklaration von neuen Strukturen.
Beispiel
Im folgenden Codebeispiel wird mithilfe der folgenden Member einem ListBox ein Schatten hinzugefügt:
op_Implicit
op_Implicit
Dieses Beispiel ist für die Verwendung mit einem Windows Form vorgesehen. Zum Ausführen dieses Beispiels fügen Sie den Code in ein Formular ein und rufen die AddShadow-Methode auf, wenn Sie das Paint-Ereignis des Formulars behandeln. Stellen Sie sicher, dass das Formular eine ListBox mit dem Namen listBox1 enthält.
Private Sub AddShadow(ByVal e As PaintEventArgs)
' Create two SizeF objects.
Dim shadowSize As SizeF = Size.op_Implicit(listBox1.Size)
Dim addSize As New SizeF(10.5F, 20.8F)
' Add them together and save the result in shadowSize.
shadowSize = SizeF.op_Addition(shadowSize, addSize)
' Get the location of the ListBox and convert it to a PointF.
Dim shadowLocation As PointF = Point.op_Implicit(listBox1.Location)
' Add a Size to the Point to get a new location.
shadowLocation = PointF.op_Addition(shadowLocation, New Size(5, 5))
' Create a rectangleF.
Dim rectFToFill As New RectangleF(shadowLocation, shadowSize)
' Create a custom brush using a semi-transparent color, and
' then fill in the rectangle.
Dim customColor As Color = Color.FromArgb(50, Color.Gray)
Dim shadowBrush As SolidBrush = New SolidBrush(customColor)
e.Graphics.FillRectangles(shadowBrush, _
New RectangleF() {rectFToFill})
' Dispose of the brush.
shadowBrush.Dispose()
End Sub
private void AddShadow(PaintEventArgs e)
{
// Create two SizeF objects.
SizeF shadowSize = listBox1.Size;
SizeF addSize = new SizeF(10.5F, 20.8F);
// Add them together and save the result in shadowSize.
shadowSize = shadowSize + addSize;
// Get the location of the ListBox and convert it to a PointF.
PointF shadowLocation = listBox1.Location;
// Add two points to get a new location.
shadowLocation = shadowLocation + new Size(5, 5);
// Create a rectangleF.
RectangleF rectFToFill =
new RectangleF(shadowLocation, shadowSize);
// Create a custom brush using a semi-transparent color, and
// then fill in the rectangle.
Color customColor = Color.FromArgb(50, Color.Gray);
SolidBrush shadowBrush = new SolidBrush(customColor);
e.Graphics.FillRectangles(shadowBrush, new RectangleF[]{rectFToFill});
// Dispose of the brush.
shadowBrush.Dispose();
}
private:
void AddShadow( PaintEventArgs^ e )
{
// Create two SizeF objects.
SizeF shadowSize = listBox1->Size;
SizeF addSize = SizeF(10.5F,20.8F);
// Add them together and save the result in shadowSize.
shadowSize = shadowSize + addSize;
// Get the location of the ListBox and convert it to a PointF.
PointF shadowLocation = listBox1->Location;
// Add two points to get a new location.
shadowLocation = shadowLocation + System::Drawing::Size( 5, 5 );
// Create a rectangleF.
RectangleF rectFToFill = RectangleF(shadowLocation,shadowSize);
// Create a custom brush using a semi-transparent color, and
// then fill in the rectangle.
Color customColor = Color::FromArgb( 50, Color::Gray );
SolidBrush^ shadowBrush = gcnew SolidBrush( customColor );
array<RectangleF>^ temp0 = {rectFToFill};
e->Graphics->FillRectangles( shadowBrush, temp0 );
// Dispose of the brush.
delete shadowBrush;
}
private void AddShadow(PaintEventArgs e)
{
// Create two SizeF objects.
SizeF shadowSize = Size.op_Implicit(listBox1.get_Size());
SizeF addSize = new SizeF(10.5F, 20.8F);
// Add them together and save the result in shadowSize.
shadowSize.set_Width(shadowSize.get_Width() + addSize.get_Width());
shadowSize.set_Height(shadowSize.get_Height() + addSize.get_Height());
// Get the location of the ListBox and convert it to a PointF.
PointF shadowLocation = Point.op_Implicit(listBox1.get_Location());
// Add two points to get a new location.
shadowLocation.set_X(shadowLocation.get_X()
+ (new Size(5, 5).get_Width()));
shadowLocation.set_Y(shadowLocation.get_Y()
+ (new Size(5, 5).get_Height()));
// Create a rectangleF.
RectangleF rectFToFill = new RectangleF(shadowLocation, shadowSize);
// Create a custom brush using a semi-transparent color, and
// then fill in the rectangle.
Color customColor = Color.FromArgb(50, Color.get_Gray());
SolidBrush shadowBrush = new SolidBrush(customColor);
e.get_Graphics().FillRectangles(shadowBrush,
new RectangleF[] { rectFToFill });
// Dispose of the brush.
shadowBrush.Dispose();
} //AddShadow
Threadsicherheit
Alle öffentlichen statischen (Shared in Visual Basic) Member dieses Typs sind threadsicher. Bei Instanzmembern ist die Threadsicherheit nicht gewährleistet.
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