Splitting BITMAPINFO* into 4 to create 4 jpg file

abc abc 351

Hi,

I need to split the bitmap image into 4 jpg images. Instead of splitting the image into 4 after creating single image, my requirement is I need to create 4 images by splitting DIB pointer BITMAPINFO*

In my application I created BITMAPINFO* using CreateDIBSection and converting DIB to jpg.

Is it possible to split BITMAPINFO pointer into 4 to create 4 jpg images?

Thanks

Barrnet Zhou-MSFT 171 Reputation points

2021-02-10T06:05:04.997+00:00

Could you elaborate on your needs? Generally speaking, the main method is to obtain four images by dividing the image, obtain the 4 parts specified by the picture, and copy them to 4 memory DCs. Then return 4 bitmap handles from 4 memory DCs.
Castorix31 86,316 Reputation points

2021-02-10T09:01:33.137+00:00

Do you really need a DIB section ?
For example, I did a test with IWICBitmapClipper to split an image into 4 parts, then save each part as .jpg, and it works fine
(from How to Clip a Bitmap Source)
abc abc 351 Reputation points

2021-02-10T09:41:14.317+00:00

In my existing application we have code to create .jpg file from DIB data and info. How to get four DIB data and info from bitmap image to create four .jpg files? In my application my superior will not allow to use COM interfaces so I cannot use IWICBitmapClipper.
abc abc 351 Reputation points

2021-02-10T09:50:56.34+00:00

I have a .bmp image. I have to split into 4 image and save it as .jpg files. In my application I have function to create .jpg file from DIB data and info. Could you please share code for splitting and creating 4 memory DC?
Castorix31 86,316 Reputation points

2021-02-10T10:12:19.993+00:00

I don't see why they don't want you to use COM interfaces, because Windows itself uses them everywhere...
And GDI+ ?
or even GDI+ Flat API ?

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Splitting BITMAPINFO* into 4 to create 4 jpg file

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