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Alex Rivera
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I'm using windows forms in C# and I need to make a textbox's background color transparent. I have a trackbar that goes from 0 to 255 that is supposed to control it, but I'm having some trouble. I created a question earlier today asking the exact same thing, but no success. Here is the code I currently have: private void trackAlpha_ValueChanged(object sender, EventArgs e) { newColor = Color.FromArgb(trackAlpha.Value, colorDialog.Color.R, colorDialog.Color.G, colorDialog.Color.B); colorDialog.Color = newColor; // The Windows dialog used to pick the colors colorPreview.BackColor = newColor; // Textbox that I'm setting the background color } The problem is that absolutely nothing happens. Any ideas on why this is not working? On the previous question, this nice guy said something about SetStyle(ControlStyles.SupportsTransparentBackColor, true); , but I have no idea on where I should put this.
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