dwtregisterclass(3dwt) [ultrix man page]
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)
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DwtFetchWidget(3Dwt) DwtFetchWidget(3Dwt) Name DwtFetchWidget - Fetches and then creates any indexed (UIL named) application widget and its children. Syntax #include <X11/DwtAppl.h> Cardinal DwtFetchWidget(hierarchy_id, index, parent_widget, widget_return, class_return) DRMHierarchy hierarchy_id; String index; Widget parent_widget; Widget *widget_return; DRMType *class_return; Arguments hierarchy_id Specifies the ID of the UID hierarchy that contains the interface definition. The hierarchy_id was returned in a previous call to DwtOpenHierarchy. index Specifies the UIL name of the widget to fetch. parent_widget Specifies the parent widget ID. widget_return Returns the widget ID of the created widget. If this is not NULL when you call DwtFetchWidgetOverride, DRM assumes that the wid- get has already been created and DwtFetchWidgetOverride returns DRMFailure. class_return Returns the class code identifying DRM's widget class. The widget class code for the main window widget, for example, is DRMwc- MainWindow. Literals identifying DRM widget class codes are defined in DRM.h. Description The DwtFetchWidget function fetches and then creates an indexed application widget and its children. The indexed application widget is any widget that is named in UIL and that is not the child of any other widget in the UID hierarchy. In fetch operations, the fetched widget's subtree is also fetched and created. This widget must not appear as the child of a widget within its own subtree. DwtFetchWidget does not execute XtManageChild for the newly created widget. DwtFetchWidget fetches widgets where DwtFetchInterfaceModule is not used. DwtFetchWidget provides specific control over which widgets are fetched from a UIL file; DwtFetchInterfaceModule, on the other hand, fetches all widgets in a single call. An application can fetch any named widget in the UID hierarchy using DwtFetchWidget. DwtFetchWidget can be called at any time to fetch a widget that was not fetched at application startup. DwtFetchWidget determines if a widget has already been fetched by checking widget_return for a NULL value. Non-NULL values signify that the widget already has been fetched, and DwtFetchWidget fails. DwtFetchWidget can be used to defer fetching pop-up widgets until they are first referenced (presumably in a callback), and then used to fetch them once. DwtFetchWidget can also create multiple instances of a widget (and its subtree). In this case, the UID definition functions as a template; a widget definition can be fetched any number of times. An application can use this to make multiple instances of a widget, for example, in a dialog box box or menu. The index (UIL name) that identifies the widget must be known to the application. Return Values This function returns one of these status return constants: DRMSuccess The function executed successfully. DRMNotFound Widget not found in UID hierarchy. DRMFailure The function failed. See Also DwtFetchWidgetOverride(3Dwt) DwtFetchWidget(3Dwt)