RMC_GetImageSizeFromFile function.
Get width and height of an image from an image file
Syntax
	nResult (LONG) = RMC_GetImageSizeFromFile( ByRef sImagePath (ASCIIZ), ByRef nWidth (LONG), ByRef nHeight (LONG) )
Parameter
	sImagePath (ASCIIZ)
		Full name of an image file.
	nWidth
		If no error: width of the image in pixel.
	nHeight
		If no error: height of the image in pixel.
Return value
	0
		No error, function succeeded.
	RMC_ERROR_FILEFOUND
		Error while reading the file. This does not necessarily mean, that the file was not found, the reason for the error may also be found in the depth of gdiplus.dll... .
Remarks
		After the successful call to this function nWidth and nHeight hold the dimensions of the image in sImagePath. Call this function e.g. if you need to know this dimensions before you add an image with RMC_COImage().