To set/unset a breakpoint, press F2. This will toggle a breakpoint at the line where the cursor is located. If you are in the debugger, a breakpoint symbol is shown at the left side of the affected line.
You can also edit the current breakpoint list using the ‘Edit breakpoints’ dialog box, which can be called up from the debugger menu.
In this dialog box, there is a list of all functions defined in the running program at the left side. To set a breakpoint in any of these functions, double-click on the large list box at the left side of the dialog box. Note that this enables you to set a breakpoint at any function, even those library functions where there is no source file associated with them. For instance, to set a breakpoint in the library function ‘printf’, double-click on its name. This is the only way to specify a breakpoint in these functions. F2 will not work here because there is no source file associated with that function.
You can specify a source file and a line in the “New breakpoint” edit field. This is enabled only when the debugger is active.
To specify a breakpoint that will be skipped <n> times before it stops the program under debug, double-click on the breakpoint you want to modify. Then enter the number of times to skip in the dialog box that pops up. This feature is active only when the debugger is running, and the settings will not be saved between debugging sessions.