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Graphics::DrawLine Method (Pen, PointF, PointF)
Visual Studio 2010
Draws a line connecting two PointF structures.
Assembly: System.Drawing (in System.Drawing.dll)
Parameters
- pen
- Type: System.Drawing::Pen
Pen that determines the color, width, and style of the line.
- pt1
- Type: System.Drawing::PointF
PointF structure that represents the first point to connect.
- pt2
- Type: System.Drawing::PointF
PointF structure that represents the second point to connect.
| Exception | Condition |
|---|---|
| ArgumentNullException | pen is nullptr. |
The following code 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 black pen.
Creates points for the endpoints of the line.
Draws the line to the screen.
public: void DrawLinePointF( PaintEventArgs^ e ) { // Create pen. Pen^ blackPen = gcnew Pen( Color::Black,3.0f ); // Create points that define line. PointF point1 = PointF(100.0F,100.0F); PointF point2 = PointF(500.0F,100.0F); // Draw line to screen. e->Graphics->DrawLine( blackPen, point1, point2 ); }
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.
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