Select Set->Set Function to set a breakpoint at the start of a function. In the dialog that appears, type the name of the function in the Function entry field, or select the List button and click on the function you want. You can also specify what executable and source file you want to set the breakpoint in. If the source code consists of several files (that is, if one or more files include other files) select which source file to set the breakpoint in from the Include File pulldown list.
More information is available on the following entry field items:
If the function you specified is an overloaded C++ function (your program contains two or more functions with the same name but different signatures), an Overloaded dialog appears, displaying a list of the overloads of the function. Choose the desired one from the list.