Debug View

The Debug view provides a graphical representation of the call stack of your program and the place where the IDL interpreter has stopped, either due to an error in the code or a breakpoint you inserted. At the bottom of the call stack is IDL's $MAIN$ context. A program called from $MAIN$ sits "on top" of $MAIN$ in the call stack; similarly, programs called from other programs sit "above" in the stack. For example, the following image of the Debug view depicts execution stopped in a routine called IDLNETURL_WIDGET, which was called from the IDL command line ($MAIN$).

The Debug view works in concert with other views to provide diagnostic information about your program. For example, variables for the current program scope are displayed in the Variables view, and breakpoints are listed in the Breakpoints view. The source editor indicates the current line being executed, and displays breakpoints in the left margin.

By default, the Debug view is only included in the Debug perspective. To add the Debug view to the IDL perspective:

Select Window → Show View → Other.

The Show View dialog displays.

Select Debug → Debug.

Toolbar

The toolbar of the Debug view contains the following buttons:


Toolbar Button	Description
Resume	Resumes program execution.
Suspend	Temporarily halts program execution.
Terminate	Primarily stops program execution, but this option also issues the following commands: RETALL WIDGET_CONTROL, /RESET CLOSE, /FORCE, /ALL HEAP_GC, /VERBOSE
Step Into	Executes the current statement. If the current statement calls another routine written in IDL code, execution steps "into" the called routine and stops.
Step Over	Executes the current statement. If the current line includes a call to another routine, executes the entire routine, but does not step into the routine code.
Step Return	Finishes executing the current routine and jumps back to the calling routine.
Skip Next Statement	Skips the current line of code (does not execute it).
Menu	Displays a dialog that allows you to choose perspectives in which the Debug view is allowed to automatically open and close views.
Minimize	Minimizes the view in the perspective.
Maximize	Maximizes the view in the perspective.

Note
The execution commands (Resume, Terminate, and so on) are also located on the main menu's Run menu.