# IupGetClassCallbacks

Definition: | include pGUI.e IupSetClassDefaultAttribute(string classname, string name, m1_string default)
Description: | Changes the default value of an attribute for a class. It can be any attribute, i.e. registered attributes or user custom attributes. classname: name of the class name: name of the attribute default: new default value. m1_string is a private type allowing string or -1.
Notes: | If the value is DEFAULTFONT, DLGBGCOLOR, DLGFGCOLOR, TXTBGCOLOR, TXTFGCOLOR, LINKFGCOLOR or MENUBGCOLOR then the actual default value will be the global attribute of the same name consulted at the time the attribute is consulted. Attributes that are not strings and attributes that have variable names, like those which has a complementary number, can NOT have a default value. Some attributes can NOT have a default value by definition. If the new default value is (char*)-1, then the default value is set to be the system default if any is defined.
See Also: | IupGetClassName, IupGetClassType, IupGetAllAttributes