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pausing_20under_20program_20control [2018/03/31 13:19]
127.0.0.1 external edit
pausing_20under_20program_20control [2018/04/17 18:11] (current)
tbest3112 Added syntax highlighting
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 //by Richard Russell, February 2007//\\ \\  When running a program from the Interactive Development Environment you can enter (or exit) **paused** mode using the menu selection **Run... Pause**, clicking the **Pause** button on the toolbar or pressing the **F8** key (if the IDE window has the input focus).\\ \\  It is also possible to enter and exit **paused** mode automatically using statements within your own BASIC program. To enter paused mode execute the following code:\\ \\  //by Richard Russell, February 2007//\\ \\  When running a program from the Interactive Development Environment you can enter (or exit) **paused** mode using the menu selection **Run... Pause**, clicking the **Pause** button on the toolbar or pressing the **F8** key (if the IDE window has the input focus).\\ \\  It is also possible to enter and exit **paused** mode automatically using statements within your own BASIC program. To enter paused mode execute the following code:\\ \\ 
 +<code bb4w>
         TRACE STEP ON         TRACE STEP ON
 +</​code>​
 As soon as this statement is executed the program will pause and can be single-stepped in the usual way (via a menu selection, the Step button in the toolbar or pressing F7). You will normally want to select the **Trace** and/or **List Variables** utility to display useful information while stepping.\\ \\  To exit paused mode and resume normal execution use the following code:\\ \\  As soon as this statement is executed the program will pause and can be single-stepped in the usual way (via a menu selection, the Step button in the toolbar or pressing F7). You will normally want to select the **Trace** and/or **List Variables** utility to display useful information while stepping.\\ \\  To exit paused mode and resume normal execution use the following code:\\ \\ 
 +<code bb4w>
         TRACE STEP OFF         TRACE STEP OFF
 +</​code>​
 You may wish to write your own **PROCpause** and **PROCunpause** procedures which execute these statements conditionally depending on some detected state. For example to pause only when the program is running under the IDE you can do:\\ \\  You may wish to write your own **PROCpause** and **PROCunpause** procedures which execute these statements conditionally depending on some detected state. For example to pause only when the program is running under the IDE you can do:\\ \\ 
 +<code bb4w>
         DEF PROCpause         DEF PROCpause
         LOCAL cmd%         LOCAL cmd%
Line 11: Line 16:
         IF INSTR($$cmd%,​ "​bbcwin.exe"​) TRACE STEP ON         IF INSTR($$cmd%,​ "​bbcwin.exe"​) TRACE STEP ON
         ENDPROC         ENDPROC
 +</​code>​
 If you have a particularly difficult bug to trace you could arrange to pause your program only when a specific condition is met, such as a variable having a certain value or a particular key being pressed. If you have a particularly difficult bug to trace you could arrange to pause your program only when a specific condition is met, such as a variable having a certain value or a particular key being pressed.
pausing_20under_20program_20control.txt ยท Last modified: 2018/04/17 18:11 by tbest3112