IupGetClassConstructor

Returns the parameter format that IupCreate / IupCreatev / IupCreatep accepts for a class.

Parameters/Return

int IupGetClassConstructor(const char* classname, char** format, char** format_attr);

classname: name of the class.
format: receives the format string, or NULL if the class has no constructor parameters. Pass NULL to ignore.
format_attr: receives the attribute name that the first parameter is stored under when the format starts with "s" or "a" (typically TITLE). Pass NULL to ignore.

Returns: 1 if the class has a constructor format, 0 if the class is registered without one (format is NULL), -1 if the class is not registered.

Format

Each character codes one parameter to IupCreatev:

Char	C type	Notes
b	unsigned char	byte (unused upstream)
j	int*	array of integer (unused upstream)
f	float	real (unused upstream)
i	int	integer; used in IupImage*
c	unsigned char*	array of byte; used in IupImage*
s	char*	string; usually stored under `format_attr` (often `TITLE`)
a	char*	name of the ACTION callback; stored under `format_attr`
h	Ihandle*	element handle
g	Ihandle**	NULL-terminated array of element handles; when present there are no other parameters

String pointers are owned by IUP.