An uncaught script exception is thrown.

Clicking the Interrupt menu item from the Debug menu in the main window.

The debugger statement is encountered in the script.

The debugger will start, i.e., take control over the script's execution when any of these conditions are met: The following image shows the debugger as created with standardWindow(): We assume that the debugger has been integrated into the application through the QScriptEngineDebugger::standardWindow() function, which provides the standard debugger configuration. We assume that the reader is somewhat familiar with general debugging concepts and existing debugging tools. This manual describes how to use the debugger.

Application developers can embed the debugger into their application through the QScriptEngineDebugger class. The next step is intended for the Professional edition users: Debugging Django Templates.The Qt Script Tools module provides a debugger for script execution in Qt applications that use Qt Script. You've tried hands on stepping, watches and evaluating expressions. You've refreshed your knowledge about the inline debugging. You've learnt how to begin the debugger session, and how to show the Python prompt in the debugger console.

You've refreshed your knowledge of the breakpoints and learnt how to place them. This brief tutorial is over - congrats! Let's repeat what you've learnt from it: The format of the variables changes in both the list of the variables and in the editor. To change the display format, select one or several int variables in the Variables list, right-click, and select View as | Hex from the context menu. This might be particularly helpful when you debug network scripts that include binary protocols. In P圜harm debugger, you can preview int variables in the hexadecimal or binary format. You can use the same field to evaluate expressions.įor more information, refer to the section Evaluate expressions. However, when the program execution continues to the scope that defines the variable, the watch gets the following view: Note that code completion is available:Īt first, you see an error-it means that the variable is not yet defined: Switch to the Threads & Variables tab, and type the name of the variable you want to watch. If you want to concentrate on your own code, use the ( Step Into My Code) button - thus you'll avoid stepping into library classes. If you click the ( Step Into) button, you will see that after the line a = int(input('a: ')) the debugger goes into the file parse.py: The debugger will stop at the breakpoint. Provide the value for a in the Debug Console. Now set another breakpoint at line 24 ( b = int(input('b: '))) and click again. Since the inline debugging is enabled, the values of the variables show in italics in the editor. For example, click the ( Step Over) button. If you use the stepping toolbar buttons, you'll move to the next line. So, you've clicked the button, and now see that the blue marker moves to the next breakpoint. Note that you can do it in course of the debugger session! Let's step!

In this case, it shows the address of the Solver object and the values of the variables a, b and c you've entered. This is the result of so-called inline debugging. In the editor, you can see text in italics next to the lines of code: On the stepping toolbar of the Debugger tab, click the ( Resume Program) button to move to the next breakpoint. The line becomes blue:īy the way, you can enter Python commands in the Debug Console when the program is suspended: It means that the line with the breakpoint is not yet executed.

The debugger suspends the program at the first breakpoint. The debugger starts, shows the Console tab of the Debug tool window, and lets you enter the desired values: Let's choose one: click in the gutter, and then select the command Debug 'solver' in the popup menu that opens: P圜harm allows starting the debugger session in several ways. OK now, as we've added breakpoints, everything is ready for debugging. To place breakpoints, just click the gutter next to the line you want your application to suspend at:įor more information, refer to Breakpoints. It means that execution will begin with it, let you enter the desired values of the variables a, b and c, and then enter the method demo. As you see, there is the main clause here.

Script debugger