Please tell me.

KIN

CBuilder Developer

Wed, 18 Jul 2001 03:00:00 GMT

Please tell me.

Hi! Thanks for the one who helped me last time.

i have a problem...
I used "Image2->Canvas->Ellipse(165,224,182,243);" to show a ellipse on
the image2.
How can i erase the ellipse and show out the backgroud?

it may be a simple and silly question but please help me.
Thanks a lot.

Jeff Cottingha

CBuilder Developer

Wed, 18 Jul 2001 03:00:00 GMT

Re:Please tell me.

Image2->Canvas->FillRect(Image2->Canvas->ClipRect);
-goldilocks

Quote

KIN wrote:
> Hi! Thanks for the one who helped me last time.

> i have a problem...
> I used "Image2->Canvas->Ellipse(165,224,182,243);" to show a ellipse on
> the image2.
> How can i erase the ellipse and show out the backgroud?

> it may be a simple and silly question but please help me.
> Thanks a lot.

KIN

CBuilder Developer

Thu, 19 Jul 2001 03:00:00 GMT

Re:Please tell me.

Thanks for telling me that.However,it doesn't work in my program.
i can't erase the ellipse which is drawn on a bitmap.
does anyone have any solution?
Please tell me.
Thanks a lot.

Quote

Jeff Cottingham wrote:
> Image2->Canvas->FillRect(Image2->Canvas->ClipRect);
> -goldilocks

> KIN wrote:

> > Hi! Thanks for the one who helped me last time.

> > i have a problem...
> > I used "Image2->Canvas->Ellipse(165,224,182,243);" to show a ellipse on
> > the image2.
> > How can i erase the ellipse and show out the backgroud?

> > it may be a simple and silly question but please help me.
> > Thanks a lot.

Jeff Cottingha

CBuilder Developer

Thu, 19 Jul 2001 03:00:00 GMT

Re:Please tell me.

void __fastcall TForm1::Button1Click(TObject *Sender)
{
foo = new Graphics::TBitmap;
foo->LoadFromFile("d:\\shipping.bmp");
Image1->Canvas->Ellipse(1,2,182,243);

Quote

}

//---------------------------------------------------------------------------

void __fastcall TForm1::Button2Click(TObject *Sender)
{
Windows::TRect bar = Rect(1,2,182,243);
Image1->Canvas->CopyRect(bar,foo->Canvas,bar);
}

foo is declared in the header....
-goldilocks

Quote

KIN wrote:
> Thanks for telling me that.However,it doesn't work in my program.
> i can't erase the ellipse which is drawn on a bitmap.
> does anyone have any solution?
> Please tell me.
> Thanks a lot.

> Jeff Cottingham wrote:

> > Image2->Canvas->FillRect(Image2->Canvas->ClipRect);
> > -goldilocks

> > KIN wrote:

> > > Hi! Thanks for the one who helped me last time.

> > > i have a problem...
> > > I used "Image2->Canvas->Ellipse(165,224,182,243);" to show a ellipse on
> > > the image2.
> > > How can i erase the ellipse and show out the backgroud?

> > > it may be a simple and silly question but please help me.
> > > Thanks a lot.

Bimo

CBuilder Developer

Fri, 20 Jul 2001 03:00:00 GMT

Re:Please tell me.

Quote

KIN wrote in message <36B2C3B3.D46CB...@hotmail.com>...
>Hi! Thanks for the one who helped me last time.

>i have a problem...
>I used "Image2->Canvas->Ellipse(165,224,182,243);" to show a ellipse on
>the image2.
>How can i erase the ellipse and show out the backgroud?

>it may be a simple and silly question but please help me.
>Thanks a lot.

You can not "undraw" stuff, if thats what your looking for.

If your drawing is made ex in OnPaint, you have to set up the drawing prior
to this, and ex. indicate that the ellipse has to be excluded.

Lars

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