How do I save a PictureBox bitmap with changes
drawn on the bitmap?
This doesn't do it:
PictureBox1.Ima ge.Save("key30. bmp")
-
How do I save a PictureBox bitmap with changes
drawn on the bitmap?
This doesn't do it:
PictureBox1.Ima ge.Save("key30. bmp")
-
Re: Saving a PictureBox bitmap with changes drawn...
Hi,
Dim fs As New System.IO.FileS tream("c:\key30 .bmp", IO.FileMode.Ope n)
Dim bm As New Bitmap(fs)
fs.Close()
Dim g As Graphics = Graphics.FromIm age(bm)
g.FillEllipse(B rushes.Red, 10, 10, 100, 100)
g.Dispose()
bm.Save("C:\key 30.bmp", Imaging.ImageFo rmat.Bmp)
Ken
-------------------------
"nobody" <nonenet@nonene tcom.net> wrote in message
news:ZAgic.1145 7$Dp7.9079@news svr31.news.prod igy.com...[color=blue]
>
> How do I save a PictureBox bitmap with changes
> drawn on the bitmap?
> This doesn't do it:
> PictureBox1.Ima ge.Save("key30. bmp")
>[/color]
-
Re: Saving a PictureBox bitmap with changes drawn...
"nobody" <nonenet@nonene tcom.net> schrieb[color=blue]
>
> How do I save a PictureBox bitmap with changes
> drawn on the bitmap?
> This doesn't do it:
> PictureBox1.Ima ge.Save("key30. bmp")[/color]
Do you really paint on the bitmap assigned to the Picturebox' Image property
or on the Picturebox?
--
Armin
How to quote and why:
Comment
-
Re: Saving a PictureBox bitmap with changes drawn...
Armin Zingler wrote:
[color=blue]
> "nobody" <nonenet@nonene tcom.net> schrieb
>[color=green]
>>How do I save a PictureBox bitmap with changes
>>drawn on the bitmap?
>>This doesn't do it:
>>PictureBox1.I mage.Save("key3 0.bmp")[/color]
>
>
> Do you really paint on the bitmap assigned to the Picturebox' Image property
> or on the Picturebox?[/color]
Here's what I got....
Dim GraphicsFun As System.Drawing. Graphics
GraphicsFun = PictureBox1.Cre ateGraphics
Dim aFont As New System.Drawing. Font("MS Sans Serif", 11, _ FontStyle.Bold)
Dim drawBrush As New _ System.Drawing. SolidBrush(Syst em.Drawing.Colo r.Black)
Dim drawFormat As New System.Drawing. StringFormat
GraphicsFun.Dra wString("E", aFont, drawBrush, 20, 31, drawFormat)
'This draws on the picture, but when saved, it doesn't
'save what is drawn, just saves the original loaded from file.
Comment
-
Re: Saving a PictureBox bitmap with changes drawn...
"nobody" <nonenet@nonene tcom.net> schrieb[color=blue]
> Armin Zingler wrote:
>[color=green]
> > "nobody" <nonenet@nonene tcom.net> schrieb
> >[color=darkred]
> >>How do I save a PictureBox bitmap with changes
> >>drawn on the bitmap?
> >>This doesn't do it:
> >>PictureBox1.I mage.Save("key3 0.bmp")[/color]
> >
> >
> > Do you really paint on the bitmap assigned to the Picturebox' Image
> > property or on the Picturebox?[/color]
>
> Here's what I got....
>
> Dim GraphicsFun As System.Drawing. Graphics
> GraphicsFun = PictureBox1.Cre ateGraphics
> Dim aFont As New System.Drawing. Font("MS Sans Serif", 11, _
> FontStyle.Bold)
> Dim drawBrush As New _
> System.Drawing. SolidBrush(Syst em.Drawing.Colo r.Black)
> Dim drawFormat As New System.Drawing. StringFormat
>
> GraphicsFun.Dra wString("E", aFont, drawBrush, 20, 31, drawFormat)
>
> 'This draws on the picture, but when saved, it doesn't
> 'save what is drawn, just saves the original loaded from file.[/color]
You are directly drawing on the Picturebox, not on the image assigned to the
Image property. To draw on the image:
dim g as graphics
g = graphics.fromim age(PictureBox1 .image)
g.DrawString("E ", aFont, drawBrush, 20, 31, drawFormat)
g.dispose
If you didn't assign an image to the Image property, you must do it before.
--
Armin
Comment
-
Re: Saving a PictureBox bitmap with changes drawn...
Armin Zingler wrote:[color=blue]
> "nobody" <nonenet@nonene tcom.net> schrieb
>[color=green]
>>Armin Zingler wrote:
>>
>>[color=darkred]
>>>"nobody" <nonenet@nonene tcom.net> schrieb
>>>
>>>
>>>>How do I save a PictureBox bitmap with changes
>>>>drawn on the bitmap?
>>>>This doesn't do it:
>>>>PictureBox1 .Image.Save("ke y30.bmp")
>>>
>>>
>>>Do you really paint on the bitmap assigned to the Picturebox' Image
>>>property or on the Picturebox?[/color]
>>
>>Here's what I got....
>>
>>Dim GraphicsFun As System.Drawing. Graphics
>>GraphicsFun = PictureBox1.Cre ateGraphics
>>Dim aFont As New System.Drawing. Font("MS Sans Serif", 11, _
>>FontStyle.Bol d)
>>Dim drawBrush As New _
>>System.Drawin g.SolidBrush(Sy stem.Drawing.Co lor.Black)
>>Dim drawFormat As New System.Drawing. StringFormat
>>
>>GraphicsFun.D rawString("E", aFont, drawBrush, 20, 31, drawFormat)
>>
>>'This draws on the picture, but when saved, it doesn't
>>'save what is drawn, just saves the original loaded from file.[/color]
>
>
> You are directly drawing on the Picturebox, not on the image assigned to the
> Image property. To draw on the image:
>
> dim g as graphics
> g = graphics.fromim age(PictureBox1 .image)
> g.DrawString("E ", aFont, drawBrush, 20, 31, drawFormat)
> g.dispose
>
> If you didn't assign an image to the Image property, you must do it before.[/color]
I'm getting this error message below....
"An unhandled exception of type 'System.Excepti on' occurred in
system.drawing. dll
Additional information: A Graphics object cannot be created from an
image that has an indexed pixel format."
Comment
-
Re: Saving a PictureBox bitmap with changes drawn...
nobody wrote:
[color=blue]
> Armin Zingler wrote:
>[color=green]
>> "nobody" <nonenet@nonene tcom.net> schrieb
>>[color=darkred]
>>> Armin Zingler wrote:
>>>
>>>
>>>> "nobody" <nonenet@nonene tcom.net> schrieb
>>>>
>>>>
>>>>> How do I save a PictureBox bitmap with changes
>>>>> drawn on the bitmap?
>>>>> This doesn't do it:
>>>>> PictureBox1.Ima ge.Save("key30. bmp")
>>>>
>>>>
>>>>
>>>> Do you really paint on the bitmap assigned to the Picturebox' Image
>>>> property or on the Picturebox?
>>>
>>>
>>> Here's what I got....
>>>
>>> Dim GraphicsFun As System.Drawing. Graphics
>>> GraphicsFun = PictureBox1.Cre ateGraphics
>>> Dim aFont As New System.Drawing. Font("MS Sans Serif", 11, _
>>> FontStyle.Bold)
>>> Dim drawBrush As New _
>>> System.Drawing. SolidBrush(Syst em.Drawing.Colo r.Black)
>>> Dim drawFormat As New System.Drawing. StringFormat
>>>
>>> GraphicsFun.Dra wString("E", aFont, drawBrush, 20, 31, drawFormat)
>>>
>>> 'This draws on the picture, but when saved, it doesn't
>>> 'save what is drawn, just saves the original loaded from file.[/color]
>>
>>
>>
>> You are directly drawing on the Picturebox, not on the image assigned
>> to the
>> Image property. To draw on the image:
>>
>> dim g as graphics
>> g = graphics.fromim age(PictureBox1 .image)
>> g.DrawString("E ", aFont, drawBrush, 20, 31, drawFormat)
>> g.dispose
>>
>> If you didn't assign an image to the Image property, you must do it
>> before.[/color]
>
>
> I'm getting this error message below....
>
> "An unhandled exception of type 'System.Excepti on' occurred in
> system.drawing. dll
> Additional information: A Graphics object cannot be created from an
> image that has an indexed pixel format."[/color]
The line it goes to when the error occurs is....
g.DrawString("E ", aFont, drawBrush, 20, 31, drawFormat)
Comment
-
Re: Saving a PictureBox bitmap with changes drawn...
nobody wrote:[color=blue]
>
> How do I save a PictureBox bitmap with changes
> drawn on the bitmap?
> This doesn't do it:
> PictureBox1.Ima ge.Save("key30. bmp")
>[/color]
Back to Delphi we go.
Comment
-
Re: Saving a PictureBox bitmap with changes drawn...
"nobody" <nonenet@nonene tcom.net> schrieb[color=blue]
>[color=green]
> > I'm getting this error message below....
> >
> > "An unhandled exception of type 'System.Excepti on' occurred in
> > system.drawing. dll
> > Additional information: A Graphics object cannot be created from an
> > image that has an indexed pixel format."[/color]
>
> The line it goes to when the error occurs is....
> g.DrawString("E ", aFont, drawBrush, 20, 31, drawFormat)[/color]
As the documentation of FromImage says, that certain formats are not
supported. Sorry. Do you have to have an indexed pixel format? Maybe you
could convert it to a Truecolor format to draw on it.
--
Armin
How to quote and why:
Comment
Comment