protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
Graphics1 = e.Graphics;
Surface1 = new Win32Surface(Graphics1.GetHdc());
Context1 = new Context(Surface1);
var p1 = new PointD(10, 10);
var p2 = new PointD(100, 10);
var p3 = new PointD(100, 100);
var p4 = new PointD(10, 100);
Context1.MoveTo(p1);
Context1.LineTo(p2);
Context1.LineTo(p3);
Context1.LineTo(p4);
Context1.LineTo(p1);
Context1.ClosePath();
Context1.Fill();
Context1.MoveTo(140, 110);
Context1.SetFontSize(32);
Context1.SetSourceColor(new Color(0, 0, 0.8, 1));
Context1.ShowText("Hello Cairo!");
Graphics1.Dispose();
Context1.Dispose();
Surface1.Dispose();
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
using (Graphics1 = e.Graphics)
using (Surface1 = new Win32Surface(Graphics1.GetHdc()))
using (Context1 = new Context(Surface1))
{
if (OnPaintAction != null)
{
OnPaintAction(Context1);
}
}
}
private void saveAsPngToolStripMenuItem_Click(object sender, EventArgs e)
{
SaveFileDialog dialog = new SaveFileDialog();
dialog.Filter = "PNG|*.png";
dialog.FileName = lastSelected;
if (dialog.ShowDialog() == DialogResult.OK)
{
using (this.Graphics1 = this.CreateGraphics())
using (Surface1 = new Win32Surface(Graphics1.GetHdc()))
using (Context1 = new Context(Surface1))
{
Surface1.WriteToPng(dialog.FileName);
}
}
}
public CairoContext(System.Windows.Forms.PaintEventArgs e) : base(e)
{
Graphics1 = e.Graphics;
Surface1 = new Win32Surface(Graphics1.GetHdc());
Context1 = new Context(Surface1);
}