Transparent Custom Graphing User Control: Turning Black on Runtime
up vote
2
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I have a custom graphing usercontrol which has support for transparent backcolor. During design, the usercontrol shows properly. However, on runtime, the backcolor turns black.
I have searched stackoverflow for a solution, but most of the articles refer to WPF or controllers. :(
Things I have tried:
I have tried using a transparentpanel usercontrol to house the graphing usercontrol. This changed nothing. I set the graphing usercontrol to use the transparentpanel as the parent, nothing.
Does anybody have any input on how to prevent this from happening? Thank you.
Update 1: If I just add the graphing usercontrol to the form and run the app, the transparency still works. It seems to be an issue when it starts graphing. I have tried the following solutions.
protected override CreateParams CreateParams
{
get
{
CreateParams parameters = base.CreateParams;
parameters.ExStyle |= WS_EX_TRANSPARENT;
return parameters;
}
}
internal const int WS_EX_TRANSPARENT = 0x00000020;
I also tried adding:
this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
this.SetStyle(ControlStyles.OptimizedDoubleBuffer, false);
c# winforms user-controls transparency graphing
asked Nov 20 at 16:46
frostbyte
325412
|
show 1 more comment
up vote
2
down vote
favorite
I have a custom graphing usercontrol which has support for transparent backcolor. During design, the usercontrol shows properly. However, on runtime, the backcolor turns black.
I have searched stackoverflow for a solution, but most of the articles refer to WPF or controllers. :(
Things I have tried:
I have tried using a transparentpanel usercontrol to house the graphing usercontrol. This changed nothing. I set the graphing usercontrol to use the transparentpanel as the parent, nothing.
Does anybody have any input on how to prevent this from happening? Thank you.
Update 1: If I just add the graphing usercontrol to the form and run the app, the transparency still works. It seems to be an issue when it starts graphing. I have tried the following solutions.
protected override CreateParams CreateParams
{
get
{
CreateParams parameters = base.CreateParams;
parameters.ExStyle |= WS_EX_TRANSPARENT;
return parameters;
}
}
internal const int WS_EX_TRANSPARENT = 0x00000020;
I also tried adding:
this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
this.SetStyle(ControlStyles.OptimizedDoubleBuffer, false);
c# winforms user-controls transparency graphing
asked Nov 20 at 16:46
frostbyte
325412
Isn't this the same issue as Transparent Overlapping Circular Progress Bars (Custom Control)
– LarsTech
Nov 20 at 17:06
I never had a problem with the transparency of the circularprogressbars to form. Just when they overlapped. This is straight up on the form.
– frostbyte
Nov 20 at 17:07
Well, what's different?
– LarsTech
Nov 20 at 17:08
Is this related to your previous question? transparentpanel usercontrol what does it mean? Is this aCustomControlor aUserControl(different stuff)? Are you setting theBackColortoColor.Transparentat some point? Post the code related to the drawing.
– Jimi
Nov 20 at 17:08
I set the graphing usercontrol to use the transparentpanel as the parentI'm guessing this is your issue. WinForms never has true transparency, just copying the background of the parent container.
– LarsTech
Nov 20 at 17:11
|
show 1 more comment
up vote
2
down vote
favorite
up vote
2
down vote
favorite
I have a custom graphing usercontrol which has support for transparent backcolor. During design, the usercontrol shows properly. However, on runtime, the backcolor turns black.
I have searched stackoverflow for a solution, but most of the articles refer to WPF or controllers. :(
Things I have tried:
I have tried using a transparentpanel usercontrol to house the graphing usercontrol. This changed nothing. I set the graphing usercontrol to use the transparentpanel as the parent, nothing.
Does anybody have any input on how to prevent this from happening? Thank you.
Update 1: If I just add the graphing usercontrol to the form and run the app, the transparency still works. It seems to be an issue when it starts graphing. I have tried the following solutions.
protected override CreateParams CreateParams
{
get
{
CreateParams parameters = base.CreateParams;
parameters.ExStyle |= WS_EX_TRANSPARENT;
return parameters;
}
}
internal const int WS_EX_TRANSPARENT = 0x00000020;
I also tried adding:
this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
this.SetStyle(ControlStyles.OptimizedDoubleBuffer, false);
c# winforms user-controls transparency graphing
asked Nov 20 at 16:46
frostbyte
325412
I have a custom graphing usercontrol which has support for transparent backcolor. During design, the usercontrol shows properly. However, on runtime, the backcolor turns black.
I have searched stackoverflow for a solution, but most of the articles refer to WPF or controllers. :(
Things I have tried:
I have tried using a transparentpanel usercontrol to house the graphing usercontrol. This changed nothing. I set the graphing usercontrol to use the transparentpanel as the parent, nothing.
Does anybody have any input on how to prevent this from happening? Thank you.
Update 1: If I just add the graphing usercontrol to the form and run the app, the transparency still works. It seems to be an issue when it starts graphing. I have tried the following solutions.
protected override CreateParams CreateParams
{
get
{
CreateParams parameters = base.CreateParams;
parameters.ExStyle |= WS_EX_TRANSPARENT;
return parameters;
}
}
internal const int WS_EX_TRANSPARENT = 0x00000020;
I also tried adding:
this.SetStyle(ControlStyles.SupportsTransparentBackColor, true);
this.SetStyle(ControlStyles.OptimizedDoubleBuffer, false);
c# winforms user-controls transparency graphing
c# winforms user-controls transparency graphing
asked Nov 20 at 16:46
frostbyte
325412
asked Nov 20 at 16:46
frostbyte
325412
edited Nov 20 at 16:57
asked Nov 20 at 16:46
frostbyte
325412
asked Nov 20 at 16:46
frostbyte
325412
asked Nov 20 at 16:46
frostbyte
325412
325412
Isn't this the same issue as Transparent Overlapping Circular Progress Bars (Custom Control)
– LarsTech
Nov 20 at 17:06
I never had a problem with the transparency of the circularprogressbars to form. Just when they overlapped. This is straight up on the form.
– frostbyte
Nov 20 at 17:07
Well, what's different?
– LarsTech
Nov 20 at 17:08
Is this related to your previous question? transparentpanel usercontrol what does it mean? Is this aCustomControlor aUserControl(different stuff)? Are you setting theBackColortoColor.Transparentat some point? Post the code related to the drawing.
– Jimi
Nov 20 at 17:08
I set the graphing usercontrol to use the transparentpanel as the parentI'm guessing this is your issue. WinForms never has true transparency, just copying the background of the parent container.
– LarsTech
Nov 20 at 17:11
|
show 1 more comment
Isn't this the same issue as Transparent Overlapping Circular Progress Bars (Custom Control)
– LarsTech
Nov 20 at 17:06
I never had a problem with the transparency of the circularprogressbars to form. Just when they overlapped. This is straight up on the form.
– frostbyte
Nov 20 at 17:07
Well, what's different?
– LarsTech
Nov 20 at 17:08
Is this related to your previous question? transparentpanel usercontrol what does it mean? Is this aCustomControlor aUserControl(different stuff)? Are you setting theBackColortoColor.Transparentat some point? Post the code related to the drawing.
– Jimi
Nov 20 at 17:08
I set the graphing usercontrol to use the transparentpanel as the parentI'm guessing this is your issue. WinForms never has true transparency, just copying the background of the parent container.
– LarsTech
Nov 20 at 17:11
Isn't this the same issue as Transparent Overlapping Circular Progress Bars (Custom Control)
– LarsTech
Nov 20 at 17:06
Isn't this the same issue as Transparent Overlapping Circular Progress Bars (Custom Control)
– LarsTech
Nov 20 at 17:06
I never had a problem with the transparency of the circularprogressbars to form. Just when they overlapped. This is straight up on the form.
– frostbyte
Nov 20 at 17:07
I never had a problem with the transparency of the circularprogressbars to form. Just when they overlapped. This is straight up on the form.
– frostbyte
Nov 20 at 17:07
Well, what's different?
– LarsTech
Nov 20 at 17:08
Well, what's different?
– LarsTech
Nov 20 at 17:08
Is this related to your previous question? transparentpanel usercontrol what does it mean? Is this a
CustomControl or a UserControl (different stuff)? Are you setting the BackColor to Color.Transparent at some point? Post the code related to the drawing.– Jimi
Nov 20 at 17:08
Is this related to your previous question? transparentpanel usercontrol what does it mean? Is this a
CustomControl or a UserControl (different stuff)? Are you setting the BackColor to Color.Transparent at some point? Post the code related to the drawing.– Jimi
Nov 20 at 17:08
I set the graphing usercontrol to use the transparentpanel as the parent I'm guessing this is your issue. WinForms never has true transparency, just copying the background of the parent container.– LarsTech
Nov 20 at 17:11
I set the graphing usercontrol to use the transparentpanel as the parent I'm guessing this is your issue. WinForms never has true transparency, just copying the background of the parent container.– LarsTech
Nov 20 at 17:11
|
show 1 more comment
1 Answer
1
active
oldest
votes
up vote
1
down vote
accepted
I had a similar problem to this. I searched Google and found my answer. I don't know your code for your custom control, but take a look for a line like this in your OnPaint:
e.Graphics.Clear(Color.Transparent);
The function "Clear" used with the "Transparent" color is not going to make your custom control transparent. It essentially paints the color transparent over your entire control. This can lead to some pretty funky results.
answered Nov 20 at 19:23
Alexandra
264
1
This is exactly what the problem was. Wow. Thank you so much for your help. Problem solved.
– frostbyte
Nov 20 at 19:26
add a comment |
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1 Answer
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1 Answer
1
active
oldest
votes
active
oldest
votes
active
oldest
votes
up vote
1
down vote
accepted
I had a similar problem to this. I searched Google and found my answer. I don't know your code for your custom control, but take a look for a line like this in your OnPaint:
e.Graphics.Clear(Color.Transparent);
The function "Clear" used with the "Transparent" color is not going to make your custom control transparent. It essentially paints the color transparent over your entire control. This can lead to some pretty funky results.
answered Nov 20 at 19:23
Alexandra
264
1
This is exactly what the problem was. Wow. Thank you so much for your help. Problem solved.
– frostbyte
Nov 20 at 19:26
add a comment |
up vote
1
down vote
accepted
I had a similar problem to this. I searched Google and found my answer. I don't know your code for your custom control, but take a look for a line like this in your OnPaint:
e.Graphics.Clear(Color.Transparent);
The function "Clear" used with the "Transparent" color is not going to make your custom control transparent. It essentially paints the color transparent over your entire control. This can lead to some pretty funky results.
answered Nov 20 at 19:23
Alexandra
264
1
This is exactly what the problem was. Wow. Thank you so much for your help. Problem solved.
– frostbyte
Nov 20 at 19:26
add a comment |
up vote
1
down vote
accepted
up vote
1
down vote
accepted
I had a similar problem to this. I searched Google and found my answer. I don't know your code for your custom control, but take a look for a line like this in your OnPaint:
e.Graphics.Clear(Color.Transparent);
The function "Clear" used with the "Transparent" color is not going to make your custom control transparent. It essentially paints the color transparent over your entire control. This can lead to some pretty funky results.
answered Nov 20 at 19:23
Alexandra
264
I had a similar problem to this. I searched Google and found my answer. I don't know your code for your custom control, but take a look for a line like this in your OnPaint:
e.Graphics.Clear(Color.Transparent);
The function "Clear" used with the "Transparent" color is not going to make your custom control transparent. It essentially paints the color transparent over your entire control. This can lead to some pretty funky results.
answered Nov 20 at 19:23
Alexandra
264
answered Nov 20 at 19:23
Alexandra
264
answered Nov 20 at 19:23
Alexandra
264
answered Nov 20 at 19:23
Alexandra
264
264
1
This is exactly what the problem was. Wow. Thank you so much for your help. Problem solved.
– frostbyte
Nov 20 at 19:26
add a comment |
1
This is exactly what the problem was. Wow. Thank you so much for your help. Problem solved.
– frostbyte
Nov 20 at 19:26
1
1
This is exactly what the problem was. Wow. Thank you so much for your help. Problem solved.
– frostbyte
Nov 20 at 19:26
This is exactly what the problem was. Wow. Thank you so much for your help. Problem solved.
– frostbyte
Nov 20 at 19:26
add a comment |
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Isn't this the same issue as Transparent Overlapping Circular Progress Bars (Custom Control)
– LarsTech
Nov 20 at 17:06
I never had a problem with the transparency of the circularprogressbars to form. Just when they overlapped. This is straight up on the form.
– frostbyte
Nov 20 at 17:07
Well, what's different?
– LarsTech
Nov 20 at 17:08
Is this related to your previous question? transparentpanel usercontrol what does it mean? Is this a
CustomControlor aUserControl(different stuff)? Are you setting theBackColortoColor.Transparentat some point? Post the code related to the drawing.– Jimi
Nov 20 at 17:08
I set the graphing usercontrol to use the transparentpanel as the parentI'm guessing this is your issue. WinForms never has true transparency, just copying the background of the parent container.– LarsTech
Nov 20 at 17:11