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PODrawing transparent controls (with all contents getting transparent too)
 

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  1. PODrawing transparent controls (with all contents getting transparent too)
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    <p>i just made a control which fades using alpha. The problem is, the "Icon" (from SystemIcons) i draw, and the other controls (one button atm) don´t get transparent. All texts and backgrounds fades by the alpha value i use in "Graphics.DrawXXX(...)".</p> <p>How could i draw those things in the same alpha value? </p> <p>Thanks a lot! R</p> <pre><code> protected override void OnPaint(PaintEventArgs e) { if (!Visible) return; Graphics g = e.Graphics; Color borderColor; Color gradientTopColor; Color gradientBottomColor; Color textColor; if (_displayColorStyle == IB_DisplayColorStyle.Normal) { borderColor = Color.FromArgb(fade_currentAlpha, 187, 191, 196); gradientTopColor = Color.FromArgb(fade_currentAlpha, 246, 249, 251); gradientBottomColor = Color.FromArgb(fade_currentAlpha, 233, 236, 240); textColor = Color.FromArgb(fade_currentAlpha, 106, 106, 106); } else if (_displayColorStyle == IB_DisplayColorStyle.Info) { borderColor = Color.FromArgb(fade_currentAlpha, 171, 186, 208); gradientTopColor = Color.FromArgb(fade_currentAlpha, 224, 236, 249); gradientBottomColor = Color.FromArgb(fade_currentAlpha, 210, 225, 240); textColor = Color.FromArgb(fade_currentAlpha, 106, 106, 106); } else if (_displayColorStyle == IB_DisplayColorStyle.Warning) { borderColor = Color.FromArgb(fade_currentAlpha, 106, 106, 106); gradientTopColor = Color.FromArgb(fade_currentAlpha, 240, 225, 53); gradientBottomColor = Color.FromArgb(fade_currentAlpha, 239, 194, 37); textColor = Color.FromArgb(fade_currentAlpha, 106, 106, 106); } else { borderColor = Color.FromArgb(fade_currentAlpha, 106, 106, 106); gradientTopColor = Color.FromArgb(fade_currentAlpha, 255, 0, 0); gradientBottomColor = Color.FromArgb(fade_currentAlpha, 217, 0, 0); textColor = Color.FromArgb(fade_currentAlpha, 224, 236, 249); } //Draw Background LinearGradientBrush backgroundBrush = new LinearGradientBrush(ClientRectangle, gradientTopColor, gradientBottomColor, 90f); g.FillRectangle(backgroundBrush, 1, 1, ClientRectangle.Width - 2, ClientRectangle.Height - 2); //Draw Border g.DrawRectangle(new Pen(new SolidBrush(borderColor), 1f), 0, 0, ClientRectangle.Width - 1, ClientRectangle.Height - 1); //Select Icon to use Icon usedIcon = _displayColorStyle == IB_DisplayColorStyle.Normal ? null : _displayColorStyle == IB_DisplayColorStyle.Info ? SystemIcons.Information : _displayColorStyle == IB_DisplayColorStyle.Warning ? SystemIcons.Warning : SystemIcons.Error; if (usedIcon != null) //If icon is used, draw this g.DrawIcon(usedIcon, 5, Size.Height / 2 - (SystemIcons.Error.Height / 2)); if (!string.IsNullOrEmpty(_title)) //If a title should be displayed { if (usedIcon == null) //No Icon, text left aligned { g.DrawString(_text, new Font("Arial", 8f, FontStyle.Regular), new SolidBrush(textColor), new RectangleF(5f, 20f, (Width - _closeButton.Width - 10), Height - 12f)); g.DrawString(_title, new Font("Arial", 10f, FontStyle.Bold), new SolidBrush(textColor), new RectangleF(5f, 5f, (Width - _closeButton.Width - 10), 15f)); } else { g.DrawString(_text, new Font("Arial", 8f, FontStyle.Regular), new SolidBrush(textColor), new RectangleF(10f + usedIcon.Width, 20f, (Width - _closeButton.Width - 20 - usedIcon.Width), Height - 12f)); g.DrawString(_title, new Font("Arial", 10f, FontStyle.Bold), new SolidBrush(textColor), new RectangleF(10f + usedIcon.Width, 5f, (Width - _closeButton.Width - 20 - usedIcon.Width), 15f)); } } else { if (usedIcon == null) //No Icon, text left aligned g.DrawString(_text, new Font("Arial", 8f, FontStyle.Regular), new SolidBrush(textColor), new RectangleF(5f, 5f, (Width - _closeButton.Width - 10), Height - 2f)); else g.DrawString(_text, new Font("Arial", 8f, FontStyle.Regular), new SolidBrush(textColor), new RectangleF(10f + usedIcon.Width, 5f, (Width - _closeButton.Width - 20 - usedIcon.Width), Height - 2f)); } base.OnPaint(e); } </code></pre>
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    1. USSharpShade
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    1. COPlease post some code so we can duplicate it.
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    2. COHere´s the draw code. It was more a generally question. I want to know how i could draw Icons and Controls on the Control transparent. They badly don´t support this :-/ Just Forms as i saw...
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    3. COOk the thing with Icons... i just found a working solution: http://stackoverflow.com/questions/1735042/draw-an-image-with-custom-transparency-in-gdi But the other thing are controls on the control ... :-/
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