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To set a breakpoint on an activity in the Design View A red icon will appear at the top left edge of the activity. Alternatively, you can press F9 after selecting the activity, or you can right-click the activity and select Breakpoint > Insert Breakpoint from the right-click menu.

Setting breakpoints. Breakpoints are set with the break command (abbreviated b ). The debugger convenience variable `$bpnum' records the number of the breakpoint you've set most recently; see section Convenience variables, for a discussion of what you can do with convenience variables.

Set breakpoints in source code To set a breakpoint in source code: Click in the far left margin next to a line of code. You can also select the line and press F9, select Debug > Toggle Breakpoint, or right-click and select Breakpoint > Insert breakpoint.

If a source file has changed and the source no longer matches the code you're debugging, the debugger won't set breakpoints in the code by default. Normally, this problem happens when a source file is changed, but the source code wasn't rebuilt. To fix this issue, rebuild the project.

Setting breakpoints A breakpoint is like a stop sign in your code -- whenever gdb gets to a breakpoint it halts execution of your program and allows you to examine it. To set breakpoints, type "break [filename]:[linenumber]". For example, if you wanted to set a breakpoint at line 55 of main.

Visual Studio projects have separate release and debug configurations for your program. You build the debug version for debugging and the release version for the final release distribution. In debug configuration, your program compiles with full symbolic debug information and no optimization.

For example, if a function is simple and only called once, the compiler can inline the function in release mode. Debug mode doesn't have these kind of optimization and is designed for debugging your code. You can then put a breakpoint on that int declaration line, and it'll be hit, even in release mode.

You can debug a release build of an application.

To set a breakpoint in source code: Click in the far left margin next to a line of code. You can also select the line and press F9, select Debug > Toggle Breakpoint, or right-click and select Breakpoint > Insert breakpoint.