FreeImage_GetPitch is available since version 1.0.
Prototype:
number FreeImage_GetPitch(number dib)
Description:
Get the width of the bitmap in bytes, rounded to the next 32-bit boundary, also known as pitch or stride or scan width. In FreeImage each scanline starts at a 32-bit boundary for performance reasons. This accessor in essential when using low level pixel manipulation functions (see also the chapter on Pixel access functions).
Return value:
Returns the width of the bitmap in bytes, rounded to the next 32-bit boundary, also known as pitch or stride or scan width.