Hallo!

Ich habe folgendes Problem:
Per Paint-EventHandler will ich über die Funktion DrawBezier eine Kurve in eine PictureBox zeichnen. Leider erscheint die Kurve nicht in meiner PictureBox! Was ich mache falsch?

[CODE]

//...
private void InitializeComponent()
{
this.pictureBox1 = new System.Windows.Forms.PictureBox();
this.SuspendLayout();
//
// pictureBox1
//
this.pictureBox1.BackColor = System.Drawing.SystemColors.ControlLightLight;
this.pictureBox1.Location = new System.Drawing.Point(64, 48);
this.pictureBox1.Name = "pictureBox1";
this.pictureBox1.Size = new System.Drawing.Size(160, 152);
this.pictureBox1.TabIndex = 0;
this.pictureBox1.TabStop = false;
this.pictureBox1.Paint += new System.Windows.Forms.PaintEventHandler(this.Paint_picBox);
//
// Form1
//
this.AutoScaleBaseSize = new System.Drawing.Size(5, 13);
this.ClientSize = new System.Drawing.Size(264, 246);
this.Controls.Add(this.pictureBox1);
this.Name = "Form1";
this.Text = "Form1";
this.Load += new System.EventHandler(this.Form1_Load);
this.ResumeLayout(false);

}

//...

private void Paint_picBox(object sender, System.Windows.Forms.PaintEventArgs pe)
{
Pen blackPen = new Pen(Color.Black,1);

float freq_StartX = 48.0F;
float freq_StartY = 200.0F;

float dB1_X = 150.0F;
float dB1_Y = 134.0F;

float dB2_X = 170.0F;
float dB2_Y = 154.0F;

float freq_StopX = 360.0F;
float freq_StopY = 200.0F;

pe.Graphics.DrawBezier(blackPen,freq_StartX,freq_StartY,dB1_X,dB1_Y,dB2_X,dB2_Y,freq_StopX,freq_Stop Y);
}

}

Danke für Hilfe

MfG
MC

Hallo!


Du musst auf die Picturebox malen. Dazu dieser Code:

Code :

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' Get handle to pictureBox1.   Dim hwnd As New IntPtr()   hwnd = pictureBox1   ' Create new graphics object using handle to window.   Dim newGraphics As Graphics = Graphics.FromHwnd(hwnd)   ' Draw rectangle to screen.   newGraphics.DrawRectangle(New Pen(Color.Red, 3), 0, 0, 200, 100)   ' Dispose of new graphics.   newGraphics.Dispose()

Weitere Infos zum zeichnen findest du in der msdn-Library im Bereich System.Drawing-Namespace in der .NET-Framework-Referenz.