BufferedGraphicsContext.Allocate Method
Definition
Important
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Creates a graphics buffer.
Overloads
| Allocate(Graphics, Rectangle) |
Creates a graphics buffer of the specified size using the pixel format of the specified Graphics. |
| Allocate(IntPtr, Rectangle) |
Creates a graphics buffer of the specified size using the pixel format of the specified Graphics. |
Allocate(Graphics, Rectangle)
- Source:
- BufferedGraphicsContext.cs
- Source:
- BufferedGraphicsContext.cs
- Source:
- BufferedGraphicsContext.cs
- Source:
- BufferedGraphicsContext.cs
- Source:
- BufferedGraphicsContext.cs
- Source:
- BufferedGraphicsContext.cs
Creates a graphics buffer of the specified size using the pixel format of the specified Graphics.
public:
System::Drawing::BufferedGraphics ^ Allocate(System::Drawing::Graphics ^ targetGraphics, System::Drawing::Rectangle targetRectangle);public System.Drawing.BufferedGraphics Allocate(System.Drawing.Graphics targetGraphics, System.Drawing.Rectangle targetRectangle);member this.Allocate : System.Drawing.Graphics * System.Drawing.Rectangle -> System.Drawing.BufferedGraphicsPublic Function Allocate (targetGraphics As Graphics, targetRectangle As Rectangle) As BufferedGraphicsParameters
Returns
A BufferedGraphics that can be used to draw to a buffer of the specified dimensions.
Examples
The following code example demonstrates creating a graphics buffer using the Allocate method. This code is part of a larger example provided for the BufferedGraphics class.
// Allocates a graphics buffer using the pixel format
// of the specified Graphics object.
grafx = appDomainBufferedGraphicsContext->Allocate( this->CreateGraphics(),
Rectangle( 0, 0, 400, 400 ) );
// Allocates a graphics buffer using the pixel format
// of the specified Graphics object.
grafx = appDomainBufferedGraphicsContext.Allocate(this.CreateGraphics(),
new Rectangle( 0, 0, 400, 400 ));
' Allocates a graphics buffer using the pixel format
' of the specified Graphics object.
grafx = appDomainBufferedGraphicsContext.Allocate(Me.CreateGraphics(), New Rectangle(0, 0, 400, 400))
Remarks
When you call the Allocate method with a rectangle whose size exceeds the value of the MaximumBuffer property, a temporary BufferedGraphicsContext is created to allocate the buffer and provide a temporary context for the buffer. The new BufferedGraphicsContext is distinct from the BufferedGraphicsContext for the application ___domain and it is disposed automatically when the BufferedGraphics returned by the Allocate method is disposed.
See also
Applies to
Allocate(IntPtr, Rectangle)
- Source:
- BufferedGraphicsContext.cs
- Source:
- BufferedGraphicsContext.cs
- Source:
- BufferedGraphicsContext.cs
- Source:
- BufferedGraphicsContext.cs
- Source:
- BufferedGraphicsContext.cs
- Source:
- BufferedGraphicsContext.cs
Creates a graphics buffer of the specified size using the pixel format of the specified Graphics.
public:
System::Drawing::BufferedGraphics ^ Allocate(IntPtr targetDC, System::Drawing::Rectangle targetRectangle);public System.Drawing.BufferedGraphics Allocate(IntPtr targetDC, System.Drawing.Rectangle targetRectangle);member this.Allocate : nativeint * System.Drawing.Rectangle -> System.Drawing.BufferedGraphicsPublic Function Allocate (targetDC As IntPtr, targetRectangle As Rectangle) As BufferedGraphicsParameters
- targetDC
-
IntPtr
nativeint
An IntPtr to a device context to match the pixel format of the new buffer to.
Returns
A BufferedGraphics that can be used to draw to a buffer of the specified dimensions.
Examples
The following code example demonstrates creating a graphics buffer using the Allocate method. This code is part of a larger example provided for the BufferedGraphics class.
// Allocates a graphics buffer using the pixel format
// of the specified handle to a device context.
grafx = appDomainBufferedGraphicsContext->Allocate( this->Handle,
Rectangle( 0, 0, 400, 400 ) );
// Allocates a graphics buffer using the pixel format
// of the specified handle to a device context.
grafx = appDomainBufferedGraphicsContext.Allocate(this.Handle,
new Rectangle( 0, 0, 400, 400 ));
' Allocates a graphics buffer using the pixel format
' of the specified handle to device context.
grafx = appDomainBufferedGraphicsContext.Allocate(Me.Handle, New Rectangle(0, 0, 400, 400))
Remarks
When you call the Allocate method with a rectangle whose size exceeds the value of the MaximumBuffer property, a temporary BufferedGraphicsContext is created to allocate the buffer and provide a temporary context for the buffer. The new BufferedGraphicsContext is distinct from the BufferedGraphicsContext for the application ___domain and it is disposed automatically when the BufferedGraphics returned by the Allocate method is disposed.
