Hi all
I have a form with an ImageCanvas (oImgCanvas) with a Bitmap (oBMP). The size is 256x256. I want to resize the image to 140x180 and save it to file as a BMP.
I can't resize oImgCanvas or oBMP (they don't seem to have a Resize method), so I am not sure how to go about this. Any help will be much appreciated.
Many thanks
Paul Newton
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Paul
Take a look at the Windows Image Acquisition API, the link below is a method that I use to resize images from a signature pad.
https://gist.github.com/AlanPBourke/b4ad122636978245a678a65155ba51e7
Also
https://docs.microsoft.com/en-us/previous-versions/windows/desktop/wiaaut/-w...
That look good Alan - I'm about to try it out. Many thanks
Paul
On 27/06/2022 13:10, Alan Bourke wrote:
Also
https://docs.microsoft.com/en-us/previous-versions/windows/desktop/wiaaut/-w...
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Unfortunately Alan's ResizeImage function won't work in this case. The source is 256x256 and the required target is 180x140. Using ResizeImage with the required target size produces an image which is 140x140.
I am sure that there is a way to do this with GDIPlusX. By the way, my original BMP is created on-the-fly (using GDIPlusX) and never has a disk presence (although I could save it to disk).
Paul
On 27/06/2022 12:59, Alan Bourke wrote:
Paul
Take a look at the Windows Image Acquisition API, the link below is a method that I use to resize images from a signature pad.
https://gist.github.com/AlanPBourke/b4ad122636978245a678a65155ba51e7
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Does this site help?
VfpImaging VFP tips and tricks blog: RESIZE IMAGES WITH VFP9 and GDI+ http://vfpimaging.blogspot.com/2006/02/resize-images-with-vfp9-and-gdi_1706.html
Frank.
Frank Cazabon
On 27/06/2022 8:40 am, Paul Newton wrote:
Unfortunately Alan's ResizeImage function won't work in this case. The source is 256x256 and the required target is 180x140. Using ResizeImage with the required target size produces an image which is 140x140.
I am sure that there is a way to do this with GDIPlusX. By the way, my original BMP is created on-the-fly (using GDIPlusX) and never has a disk presence (although I could save it to disk).
Paul
On 27/06/2022 12:59, Alan Bourke wrote:
Paul
Take a look at the Windows Image Acquisition API, the link below is a method that I use to resize images from a signature pad.
https://gist.github.com/AlanPBourke/b4ad122636978245a678a65155ba51e7
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Hi Frank
Exactly what I needed - funnily enough I had experimented with GetThumbnailImage but as your link points out
The function GetThumbnailImage can be used to get a resized image, but the result may come with less quality. The sample below does the same thing, but creates an image with a better quality.
Many thanks - problem solved.
Paul
On 27/06/2022 14:48, Frank Cazabon wrote:
Does this site help?
VfpImaging VFP tips and tricks blog: RESIZE IMAGES WITH VFP9 and GDI+ http://vfpimaging.blogspot.com/2006/02/resize-images-with-vfp9-and-gdi_1706.html
Frank.
Frank Cazabon
On 27/06/2022 8:40 am, Paul Newton wrote:
Unfortunately Alan's ResizeImage function won't work in this case. The source is 256x256 and the required target is 180x140. Using ResizeImage with the required target size produces an image which is 140x140.
I am sure that there is a way to do this with GDIPlusX. By the way, my original BMP is created on-the-fly (using GDIPlusX) and never has a disk presence (although I could save it to disk).
Paul
On 27/06/2022 12:59, Alan Bourke wrote:
Paul
Take a look at the Windows Image Acquisition API, the link below is a method that I use to resize images from a signature pad.
https://gist.github.com/AlanPBourke/b4ad122636978245a678a65155ba51e7
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Alan Bourke -
Frank Cazabon -
Paul Newton