Save specific part of image

[soulow]

Hello, I have a problem.
I load image, I am doing something with this image, and after that I want to save only specific part of the image, from the beginning to specific point(for example Width = 600 Height=60).
how can i do it?

 

[smays]

Hope this helps.

This code should do the trick:

	Graphics::TBitmap *bmpOriginalImage, *bmpPartOfImage = new Graphics::TBitmap;
	TRect rectPartOfOriginalImage, rectNewImage;

	rectPartOfOriginalImage.Top = iTopEdgeOfCroppedImage;
	rectPartOfOriginalImage.Left = iLeftEdgeOfCroppedImage;
	rectPartOfOriginalImage.Bottom = iBottomEdgeOfCroppedImage;
	rectPartOfOriginalImage.Right = iRightEdgeOfCroppedImage;

	bmpPartOfImage->Width = rectPartOfOriginalImage.Right - rectPartOfOriginalImage.Left;
	bmpPartOfImage->Height = rectPartOfOriginalImage.Bottom - rectPartOfOriginalImage.Top;
	rectNewImage.Top = 0;
	rectNewImage.Left = 0;
	rectNewImage.Bottom = bmpCroppedImage->Height;
	rectNewImage.right = bmpCroppedImage->Width;

	bmpPartOfImage->Canvas->CopyRect(rectNewImage, bmpOriginalImage->Canvas, rectPartOfOriginalImage);
	delete bmpOriginalImage;
	delete bmpPartOfImage;

iTopEdgeOfCroppedImage, iLeftEdgeOfCroppedImage, iBottomEdgeOfCroppedImage, and iRightEdgeOfCroppedImage represent the physical edges of the area you wish to copy.

Steve.

 

[soulow]

thank you, but I am having problem, cause I am using TImage, can I convert TImage to TBitmap?
because i am drawing something on the TIimage image and when CopyRect the canvas, only the pictures is copied without the drawing

 

[smays]

TPicture, which is a member of TImage, contains a TBitmap:

Image1->Picture->Bitmap->CopyRect(...);

Steve.

 

[soulow]

tnx for the help