Splitting jpg image

Question

Hi,

I need to split the jpg image into 4 images. Instead of splitting the image into 4 after creating single image, my requirement is I need to create 4 images by splitting bitmap bit data or hbitmap.

Is it possible to split bitmap bit data or hbitmap to create 4 images?
Is there any other way using win32 apis

Thanks

Answer 1

From HBITMAP, you can just use StretchBlt to divide it in 4 parts :

Answer 2

Hello, @abc abc

For jpg image, consider using WIC to get its handle.

Here is a sample,

How to Load a Bitmap from a File

After getting the handle of the picture, draw it to hdc, and use the BitBlt function for bit block transmission of color data. Just set the coordinates and size of the picture.

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Answer 3

If you already have the full image (HBITMAP), you can create a Bitmap object using Image::FromHbitmap, then you can extract a rectangle using Bitmap::Clone.