Although the scope of a variable depends on where it is declared in the source
code, watches are all created using the same Add Watch dialog box, and edited
using the same Edit Watch dialog box. The key to differentiating among the various
levels of scope lies in the controls contained in the Context group of the Watch
dialog boxes.
The Context group contains three controls: Procedure, Module, and Project.
The control pertaining to Project is a simple label that displays the name of
the current project. Because it is a label, it can’t be edited. It serves
as a reminder that only those procedures and modules will be displayed by the
other controls in the group.
The real work of determining the scope of a watch is done by the other two
controls. If you want to define a watch at the procedure level, that means that
you only want to assess the value of the Watch expression in the context of a
particular procedure. To do this, use the Module combo box to select the appropriate
module. The Module combo box displays the names of all modules contained in the
current project.
After a module name is selected, use the Procedure combo box to choose the
procedure for which the watch should be active. The Procedure combo box displays
only those procedures contained in the currently selected module. If the procedure
you want isn’t in the list, check the Module combo box again. You probably
selected the wrong module by mistake.
Figure 18.24 shows how to use the Add Watch dialog box to create a procedure-level
watch.
FIGURE 18.24 A procedure-level watch.
Remember that if you need to modify the settings for a watch, you can use the
Edit Watch dialog box to do so. The following section shows you an example of
this.
