Legacy ImageMagick Discussions Archive

First and last bump of this topic, which I think is well deserved. Though unfortunately it appears that they won't really take action, unless they are provided some kind of source code patch, I presume.

https://en.wikipedia.org/wiki/BMP_file_format Ctrl+F for "BITMAPV3INFOHEADER" and it says: Adds alpha channel bit mask. It also says: Not officially documented, So in either case, ImageMagick is already supporting a format that is not "formally" documented, yet supports it anyway. The more important ...

Okay, I was able to solve my problem by creating my own C program to do some of the conversion manually. TL;DR: ImageMagick developers, please provide a way to add an alpha channel for the BMP3 format. Until that happens, I will provide my temporary solution. First off, let's go over what happens ...

@fmw42: I will look into PNM later if I have to, though I do not see why an intermediate format has to be used for something apparently so simple. @anibgo: You are correct that "convert a.png a.bmp" will indeed produce a 32-bit BMP with transparency (GIMP displays the transparency just fine ...

EDIT: I changed the thread title to better reflect the issue. Please refer to my latest posts; the OP is kind of a digression. PREAMBLE: This needs to be addressed, otherwise Visual Studio C++ developers cannot use transparent bitmaps into their .rc files. Like at all. Period. Zero. Hours of ...