RegionData Class
Encapsulates the data that makes up a Region object. This class cannot be inherited.
Assembly: System.Drawing (in System.Drawing.dll)
The RegionData type exposes the following members.
| Name | Description | |
|---|---|---|
![]() | Equals(Object) | Determines whether the specified Object is equal to the current Object. (Inherited from Object.) |
![]() | Finalize | Allows an object to try to free resources and perform other cleanup operations before it is reclaimed by garbage collection. (Inherited from Object.) |
![]() | GetHashCode | Serves as a hash function for a particular type. (Inherited from Object.) |
![]() | GetType | Gets the Type of the current instance. (Inherited from Object.) |
![]() | MemberwiseClone | Creates a shallow copy of the current Object. (Inherited from Object.) |
![]() | ToString | Returns a string that represents the current object. (Inherited from Object.) |
The following example is designed for use with Windows Forms, and it requires PaintEventArgs e, which is a parameter of the Paint event handler. The code performs the following actions:
Creates a rectangle and draw its to the screen in black.
Creates a region using the rectangle.
Gets the RegionData.
Draws the region data (an array of bytes) to the screen, by using the DisplayRegionData helper function.
public: void GetRegionDataExample( PaintEventArgs^ e ) { // Create a rectangle and draw it to the screen in black. Rectangle regionRect = Rectangle(20,20,100,100); e->Graphics->DrawRectangle( Pens::Black, regionRect ); // Create a region using the first rectangle. System::Drawing::Region^ myRegion = gcnew System::Drawing::Region( regionRect ); // Get the RegionData for this region. RegionData^ myRegionData = myRegion->GetRegionData(); int myRegionDataLength = myRegionData->Data->Length; DisplayRegionData( e, myRegionDataLength, myRegionData ); } // THIS IS A HELPER FUNCTION FOR GetRegionData. void DisplayRegionData( PaintEventArgs^ e, int len, RegionData^ dat ) { // Display the result. int i; float x = 20,y = 140; System::Drawing::Font^ myFont = gcnew System::Drawing::Font( "Arial",8 ); SolidBrush^ myBrush = gcnew SolidBrush( Color::Black ); e->Graphics->DrawString( "myRegionData = ", myFont, myBrush, PointF(x,y) ); y = 160; for ( i = 0; i < len; i++ ) { if ( x > 300 ) { y += 20; x = 20; } e->Graphics->DrawString( dat->Data[ i ].ToString(), myFont, myBrush, PointF(x,y) ); x += 30; } }
Windows 7, Windows Vista SP1 or later, Windows XP SP3, Windows XP SP2 x64 Edition, Windows Server 2008 (Server Core not supported), Windows Server 2008 R2 (Server Core supported with SP1 or later), Windows Server 2003 SP2
The .NET Framework does not support all versions of every platform. For a list of the supported versions, see .NET Framework System Requirements.
