Label BackColor Transparency

[apc2003]

My problem is something simple so simple i can't make it work at all.

If anyone is familular with Borland software, when using a label you could set the label's background color to "Transparent = true". I've recently needed to do this in C# and found setting the "BackColor" of a label to Transparent will not work.

I need to place a label on top of a image but make it so the label backgound is completely transparent.

How do I do this? If anyone can help it would be great as this is one of them simple stupid little things that isn't as obvious as I would of hoped.

Regards in advance...

 

[obislavu]

You can build the transparent you want.
For example:
this.label1.BackColor = System.Drawing.Color.FromArgb(((System.Byte)(224)), ((System.Byte)(224)), ((System.Byte)(224)));

-obislavu-

 

[apc2003]

The example you posted is fine if your only working with a coloured background. What do I use if I want a TRUE transparency if the label is sitting on top of an image?

Regards...

 

[gorgor]

Instead of using an actual label, why not use GDI+? Use the DrawString method in the Paint override to draw your own "labels". When you draw the text, the background of the text will be transparent.

private void Your_Paint(object sender, System.Windows.Forms.PaintEventArgs e)
{
    string str = "label text";
    StringFormat format = new StringFormat();
    format.Alignment =StringAlignment.Near;
    format.Trimming = StringTrimming.None;

    RectangleF rectF = new RectangleF(0f,0f,0f,0f);
    //Define your text rectangle here//
    //You can "measure" the required rect size using:
    //SizeF sz = e.Graphics.MeasureString(str, this.Font);
    //Then just modify the rectangle's position

    //Write the text:
    e.Graphics.DrawString(str, this.Font, new SolidBrush(Color.Black), rectF, format);

}

Hope this helps.