| <HTML> |
| <HEAD> |
| <TITLE>Locals Window Help</TITLE> |
| </HEAD> |
| <BODY> |
| <H1>The Locals Window</H1> |
| <H2>Overview</H2> |
| <P>The Locals Window displays all local variables in scope. It may be used to |
| visualize local variables. Local variables need to be collected |
| before they can be viewed. See <A HREF="tracedlg.html#t_actions_add">Adding |
| an Action</A> in the Tracepoint Dialog for more information.</P> |
| |
| <P>Locals Window topics: |
| <UL> |
| <LI><UL><A HREF="#menus">Variable Menu</A> |
| <LI><A HREF="#menus_fmt">Format</A> |
| </UL> |
| <LI><UL><A HREF="#display">Locals Display</A> |
| <LI><A HREF="#display_deref">Dereferencing Pointers</A> |
| <LI><A HREF="#display_struct">Viewing a Structure or Class</A> |
| <LI><A HREF="#display_popup">Locals Pop-up Menu</A> |
| </UL> |
| </UL></P> |
| |
| <H3><A NAME="menus">Variable Menu</A></H3> |
| The Variable Menu gives on-screen access to the funtions of the Locals Window. |
| To use any of these functions, first use the left mouse button to select a |
| variable from the display. Then select: |
| |
| <DL> |
| <DT><A NAME="menus_fmt">Format</A> |
| <DD>Change the display format of the variable |
| </DL> |
| |
| <H3><A NAME="display">Locals Display</A></H4> |
| The Locals Window Display consists of a scrolled listbox which contains all |
| local variables, one per line. Locals which were not collected at the current |
| tracepoint will display a memory-access error. To use any of the functions of |
| the Locals Window, use the left mouse button to select any element from the |
| Display. |
| |
| <P>Pointers, structures, and classes appear in the display with small exapansion |
| box before their names. To <A NAME="display_deref">dereference pointers</A> or |
| <A NAME="display_struct">view the members of classes or structures</A>, click |
| the closed expansion box (which appears as a small plus sign, "+") to "expand" |
| the listing. The expansion box changes to a minus sign, "-", indicating that the |
| display is now open. Pointers, structures and classes may be expanded recursively |
| to allow multiple pointer dereferences and embedded structure viewing. |
| |
| <P>The Locals Display updates as the trace buffer is navigated, highlighting |
| in blue those variables whose values have changed.</P> |
| |
| <P>The Locals Window will, by default, display all pointers in hexadecimal and all |
| other variables in decimal. To change the default display of variables, use the |
| "set output-radix" command in the console window. (Type "help set output-radix" in the |
| console window for help. To make this change permanent, it must be added to the user's |
| init file -- .gdbinit.) To change the display format for a variable, |
| select the Format option from either the Variable Menu or the |
| <A HREF="#display_popup">Locals Pop-up Menu</A>. |
| <BR> |
| |
| <H4><A NAME="display_popup">Locals Pop-up Menu</A></H4> |
| The Locals Pop-up Menu provides quick access to the functions of the Locals Window. |
| To use the Locals Pop-up Menu, first select a variable from the Display (by clicking |
| the left mouse button on it) and click the right mouse button, choosing from the |
| pop-up: |
| <DL> |
| <DT>Format |
| <DD>Change the display format of the variable. The variable may be displayed |
| as: |
| <DL> |
| <DT>Hex |
| <DD>hexadecimal (base 16) |
| <DT>Decimal |
| <DD>decimal (base 10) |
| <DT>Binary |
| <DD>binary (base 2) |
| <DT>Octal |
| <DD>octal (base 8) |
| </DL> |
| </DL> |
| </BODY> |
| </HTML> |
