GD
Open source code library for the dynamic creation of images by programmers.
Website: http://www.libgd.org
Platforms supported: Win32, Linux, FreeBSD, Haiku
Headers to include: gd.bi
Header version: 2.1.1
Examples: yes, in examples/files/GD/
Haiku R1 beta 6 amd64: `examples/files/GD/gd.bas` compiled and ran with
FreeBASIC 1.20.4-3 against HaikuPorts GD 2.3.3. It generated non-empty GIF,
PNG and JPEG output files.
The original Windows example and its used data layouts were checked with GD 2.3.3 on Win64. This check does not qualify the older Win32 archive supplied with some FreeBASIC SDKs.
gdImageCreateTrueColor returns an owned image or a null pointer. Release a successful image with gdImageDestroy after drawing and saving it.
The example uses gdImageGifPtr, gdImagePngPtr and gdImageJpegPtr. Each returns a GD-owned encoded buffer and a C int byte count, represented by FreeBASIC Long. Release the buffer with gdFree, including when opening or writing the output file fails.
These buffer APIs avoid passing a caller's FILE record into a DLL built with a different C runtime. The example writes the encoded bytes through its own runtime, truncates previous output, checks the byte count and close status, and returns a nonzero process status if any of the three saves fails.
Website: http://www.libgd.org
Platforms supported: Win32, Linux, FreeBSD, Haiku
Headers to include: gd.bi
Header version: 2.1.1
Examples: yes, in examples/files/GD/
Haiku R1 beta 6 amd64: `examples/files/GD/gd.bas` compiled and ran with
FreeBASIC 1.20.4-3 against HaikuPorts GD 2.3.3. It generated non-empty GIF,
PNG and JPEG output files.
The original Windows example and its used data layouts were checked with GD 2.3.3 on Win64. This check does not qualify the older Win32 archive supplied with some FreeBASIC SDKs.
gdImageCreateTrueColor returns an owned image or a null pointer. Release a successful image with gdImageDestroy after drawing and saving it.
The example uses gdImageGifPtr, gdImagePngPtr and gdImageJpegPtr. Each returns a GD-owned encoded buffer and a C int byte count, represented by FreeBASIC Long. Release the buffer with gdFree, including when opening or writing the output file fails.
These buffer APIs avoid passing a caller's FILE record into a DLL built with a different C runtime. The example writes the encoded bytes through its own runtime, truncates previous output, checks the byte count and close status, and returns a nonzero process status if any of the three saves fails.