12-10-2009
Just as a note, I did some quick tinkering and it appears the stack frame for Linux (probably ia32 in general) stores the parameters in the stack frame of the callee. So, in contrast to AIX, coding your generic thrower in Linux will require you to allocate a brand new stack frame, put all the arguments in it, configure it correctly to call the procedure, and fire it off. Non-trivial at best.
Having no experience with the reflection library, I don't know if it can be used to build dynamic calls. If so, great.... But, I have my doubts.
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LEARN ABOUT HPUX
dthelpreturnselectedwidgetid
DtHelpReturnSelectedWidgetId(library call) DtHelpReturnSelectedWidgetId(library call)
NAME
DtHelpReturnSelectedWidgetId -- select a widget or gadget
SYNOPSIS
#include <Dt/Help.h>
int DtHelpReturnSelectedWidgetId(
Widget parent,
String cursor,
Widget *widget);
DESCRIPTION
The DtHelpReturnSelectedWidgetId function provides an interface for users to select a component within an application.
This function grabs the pointer and returns the widget within which a button press occurs. Pressing the escape key (ESC) aborts this func-
tion.
The parent argument specifies the widget ID to use as the basis of the interaction, usually a top level shell.
The cursor argument specifies the cursor to be used for the pointer during the interaction. If a NULL value is used, DtHelpReturnSelected-
WidgetId uses a default cursor value.
The widget argument is the return value (for example, the selected widget). A NULL value is returned on error.
The DtHelpReturnSelectedWidgetId function allows applications to get the widget ID for any widget in their user interface that the user has
selected via the pointer. The application can then directly display a help topic based on the selected widget, or dynamically construct
some help information based on the current context of the selected item. At any point while the question mark cursor is displayed, the
user can select the escape key to abort the function call, and a NULL value is returned. If the user selects any item outside the current
applications windows, an error status is returned along with a NULL value for the widget argument. Refer to XmTrackingLocate(3) for a sim-
ilar function.
RETURN VALUE
Upon successful completion, the DtHelpReturnSelectedWidgetId function returns one of the following status values:
DtHELP_SELECT_ERROR
An error occurred while attempting to process the function.
DtHELP_SELECT_INVALID
The user selected an invalid component that is not contained in the current widget hierarchy.
DtHELP_SELECT_ABORT
The user aborted the function (for example, pressed the escape key), and a NULL widget value is passed back.
DtHELP_SELECT_VALID
The user selected a valid component within the application, and the widget argument is the ID of the selected component.
SEE ALSO
Dt/Help.h - DtHelp(5), DtCreateHelpQuickDialog(3), DtCreateHelpDialog(3); XmTrackingLocate(3),
DtHelpReturnSelectedWidgetId(library call)