RegionData 类
定义
public ref class RegionData sealed
public sealed class RegionData
type RegionData = class
Public NotInheritable Class RegionData
- 继承
-
RegionData
示例
下面的示例旨在与 Windows 窗体一起使用,并且它需要作为 PaintEventArgs e Paint 事件处理程序的参数。The following example is designed for use with Windows Forms, and it requires PaintEventArgse, which is a parameter of the Paint event handler. 此代码执行以下操作:The code performs the following actions:
创建一个矩形,并将其绘制到屏幕黑色。Creates a rectangle and draw its to the screen in black.
使用矩形创建区域。Creates a region using the rectangle.
获取 RegionData。Gets the RegionData.
使用 DisplayRegionData helper 函数将区域数据 (的字节数组绘制) 到屏幕上。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;
}
}
public void GetRegionDataExample(PaintEventArgs e)
{
// Create a rectangle and draw it to the screen in black.
Rectangle regionRect = new Rectangle(20, 20, 100, 100);
e.Graphics.DrawRectangle(Pens.Black, regionRect);
// Create a region using the first rectangle.
Region myRegion = new 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.
public void DisplayRegionData(PaintEventArgs e,
int len,
RegionData dat)
{
// Display the result.
int i;
float x = 20, y = 140;
Font myFont = new Font("Arial", 8);
SolidBrush myBrush = new SolidBrush(Color.Black);
e.Graphics.DrawString("myRegionData = ",
myFont,
myBrush,
new 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,
new PointF(x, y));
x += 30;
}
}
Public Sub GetRegionDataExample(ByVal e As PaintEventArgs)
' Create the first rectangle and draw it to the screen in black.
Dim regionRect As New Rectangle(20, 20, 100, 100)
e.Graphics.DrawRectangle(Pens.Black, regionRect)
' Create a region using the first rectangle.
Dim myRegion As New [Region](regionRect)
' Get the RegionData for this region.
Dim myRegionData As RegionData = myRegion.GetRegionData()
Dim myRegionDataLength As Integer = myRegionData.Data.Length
DisplayRegionData(e, myRegionDataLength, myRegionData)
End Sub
' Helper Function for GetRegionData.
Public Sub DisplayRegionData(ByVal e As PaintEventArgs, ByVal len As Integer, _
ByVal dat As RegionData)
' Display the result.
Dim i As Integer
Dim x As Single = 20
Dim y As Single = 140
Dim myFont As New Font("Arial", 8)
Dim myBrush As New SolidBrush(Color.Black)
e.Graphics.DrawString("myRegionData = ", myFont, myBrush, _
New PointF(x, y))
y = 160
For i = 0 To len - 1
If x > 300 Then
y += 20
x = 20
End If
e.Graphics.DrawString(dat.Data(i).ToString(), myFont, _
myBrush, New PointF(x, y))
x += 30
Next i
End Sub
属性
| Data |
获取或设置指定 Region 对象的字节数组。Gets or sets an array of bytes that specify the Region object. |
方法
| Equals(Object) |
确定指定对象是否等于当前对象。Determines whether the specified object is equal to the current object. (继承自 Object) |
| GetHashCode() |
作为默认哈希函数。Serves as the default hash function. (继承自 Object) |
| GetType() |
获取当前实例的 Type。Gets the Type of the current instance. (继承自 Object) |
| MemberwiseClone() |
创建当前 Object 的浅表副本。Creates a shallow copy of the current Object. (继承自 Object) |
| ToString() |
返回表示当前对象的字符串。Returns a string that represents the current object. (继承自 Object) |