|
|
DwtRegisterClass(3Dwt) DwtRegisterClass(3Dwt) Name DwtRegisterClass - Saves the information needed for DRM to access the widget creation function for user-defined widgets. Syntax #include <X11/DwtAppl.h> Cardinal DwtRegisterClass(class_code, class_name, create_name, create_proc, class_record) DRMType class_code; String class_name; String create_name; Widget (* create_proc) (); WidgetClass class_record; Arguments class_code Specifies the code name of the class. For all application-defined widgets, this code name is DRMwcUnknown. For all XUI Toolkit widgets, each code name begins with the letters DRMwc. The code names for all application widgets are defined in DRM.h. class_name Specifies the case-sensitive name of the class. The class names for all XUI Toolkit widgets are defined in DRM.h. Each class name begins with the letters DRMwcn. create_name Specifies the case-sensitive name of the low-level widget creation function for the class. An example from the XUI Toolkit is DwtLabelCreate. Arguments are parent_widget, name, override_arglist, and override_argcount. For user-defined widgets, create_name is the creation procedure in the UIL that defines this widget. create_proc Specifies the address of the creation function that you named in create_name. class_record Specifies a pointer to the class record. Description The DwtRegisterClass function allows DRM to access user-defined widget classes. This function registers the necessary information for DRM to create widgets of this class. You must call DwtRegisterClass prior to fetching any user-defined class widget. DwtRegisterClass saves the information needed to access the widget creation function and to do type conversion of argument lists by using the information in DRM databases. Return Values This function returns one of these status return constants: DRMSuccess The function executed successfully. DRMFailure The allocation of the class descriptor failed. DwtRegisterClass(3Dwt)