Custom color doesn't work in DrawString

[Larry]

I'm sure I've missed the obvious, but when I define a custom color, my
DrawString call from my Paint event doesn't seem to draw anything at
all.

void btnNav_Paint(object sender, PaintEventArgs e)
{
SolidBrush brush1 = new SolidBrush(Color.Blue);
SolidBrush brush2 = new SolidBrush(Color.FromArgb(0x0000FF));
StringFormat format =
(StringFormat)StringFormat.GenericTypographic.Clon e();
format.Alignment = StringAlignment.Center;
format.LineAlignment = StringAlignment.Center;
Rectangle drawingRect = ClientRectangle;
drawingRect.Inflate(-15, 0);
e.Graphics.DrawString("Text", this.Font, brush1, drawingRect,
format);
//e.Graphics.DrawString("Text", this.Font, brush2, drawingRect,
format);
}

When I use brush1, the text draws correctly. When I use brush2,
nothing seems to draw at all. Any color I create with Color.FromArgb()
fails, but the standard colors all work.

This code is in an object derived from Label. I just chained in my
Paint event handler, so the base class Paint is still being called:

this.Paint += new PaintEventHandler(btnNav_Paint);

I can't figure out why a custom color behaves differently from a
standard color. Any ideas?

[TAB]

Hi

With SolidBrush(Color.FromArgb(0x0000FF));
you are defining a Color with zero alpha, which means it will be invisible.
This should be either Color.FromArgb(0x000000FF) (32-bit),
or Color.FromArgb(255, 0x0000FF), alpha + color,
or Color.FromArgb(0, 0, 255) for blue, alpha assumed 255.

"Larry" <La****@digis.netskrev i meddelandet
news:9c**********************************@o40g2000 prn.googlegroups.com...

I'm sure I've missed the obvious, but when I define a custom color, my
DrawString call from my Paint event doesn't seem to draw anything at
all.

void btnNav_Paint(object sender, PaintEventArgs e)
{
SolidBrush brush1 = new SolidBrush(Color.Blue);
SolidBrush brush2 = new SolidBrush(Color.FromArgb(0x0000FF));
StringFormat format =
(StringFormat)StringFormat.GenericTypographic.Clon e();
format.Alignment = StringAlignment.Center;
format.LineAlignment = StringAlignment.Center;
Rectangle drawingRect = ClientRectangle;
drawingRect.Inflate(-15, 0);
e.Graphics.DrawString("Text", this.Font, brush1, drawingRect,
format);
//e.Graphics.DrawString("Text", this.Font, brush2, drawingRect,
format);
}

When I use brush1, the text draws correctly. When I use brush2,
nothing seems to draw at all. Any color I create with Color.FromArgb()
fails, but the standard colors all work.

This code is in an object derived from Label. I just chained in my
Paint event handler, so the base class Paint is still being called:

this.Paint += new PaintEventHandler(btnNav_Paint);

I can't figure out why a custom color behaves differently from a
standard color. Any ideas?

[=?ISO-8859-1?Q?G=F6ran_Andersson?=]

TAB wrote:

>
Hi

With SolidBrush(Color.FromArgb(0x0000FF));
you are defining a Color with zero alpha, which means it will be invisible.
This should be either Color.FromArgb(0x000000FF) (32-bit),

That still has an alpha component of zero.

or Color.FromArgb(255, 0x0000FF), alpha + color,

There is no such overload. You have to use a Color value:

Color.FromArgb(255, Color.FromArgb(0x0000FF))

or Color.FromArgb(0, 0, 255) for blue, alpha assumed 255.

That works. You can also specify the alpha component:

Color.FromArgb(255, 0, 0, 255)

--
Göran Andersson
_____
http://www.guffa.com

[TAB]

You are right, I was in a hurry so the answer was without any afterthought.

"Göran Andersson" <gu***@guffa.comskrev i meddelandet
news:OT**************@TK2MSFTNGP03.phx.gbl...

TAB wrote:

>>
Hi

With SolidBrush(Color.FromArgb(0x0000FF));
you are defining a Color with zero alpha, which means it will be
invisible.
This should be either Color.FromArgb(0x000000FF) (32-bit),

That still has an alpha component of zero.

>or Color.FromArgb(255, 0x0000FF), alpha + color,

There is no such overload. You have to use a Color value:

Color.FromArgb(255, Color.FromArgb(0x0000FF))

>or Color.FromArgb(0, 0, 255) for blue, alpha assumed 255.

That works. You can also specify the alpha component:

Color.FromArgb(255, 0, 0, 255)

--
Göran Andersson
_____
http://www.guffa.com