asp.net textbox barcode scanner Step 6b: Test and Debug in Objective-C

Creating QR Code in Objective-C Step 6b: Test and Debug

Step 6b: Test and Debug
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This may be a good place to test what has been done so far. When the project runs, drag a text file onto the Get File button, or click the button and select a file from the Open panel. Stop the run. If nothing happened when you dragged a file to the button, check to make sure the name of the button is the same as is required by the drop handler. if name of theObject is "pshFiles" then Also, double-check to make sure you have set the button to recognize a file (check Filenames in the Drag & Drop tab of Button s Info palette).
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Step 7a: Attach Scripts
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Once you ve finished testing the code written so far, it s time to add the rest.
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Save Button Script
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Create a script for the pshSave button. This will call a routine to verify whether there is text in the text view. If the value of the application property hasChanged is found to be true, the routine will need to save the text to the current file. (The reference to the current file is in the kCurrentFile property.)
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CHAPTER 13 ADVANCED USER INTERACTION
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You can find the routine you will use, GetTextandSave, in the GetSetSave collection of the Script Library. Place this in the script for the pshSave button. The call to the GetTextandSave routine needs to be cut and pasted into the clicked handler for the Save Button script. The properties hasChanged and kCurrentFile are already defined in the project script, so you can delete them. All that is left is to add a reference to the text view in place of the TEXT VIEW REFERENCE placeholder.
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Main Window Script
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You need to attend to just one detail. The hasChanged property will have the value false until you add code that will set the value of hasChanged to false when new text is placed in the text view or set the value of hasChanged to true when the text view gets a changed event. For the first step, the populateWindow subroutine in the script for window main would be a good place to initialize the value for the hasChanged property. Add the following statement as the last line: set my hasChanged to false For the second step, you can add a changed handler to the window s script. This will set the value of hasChanged to true when the window receives a changed event from the text view. You can find the changed handler in the Editing group of handlers for a text object. Select the text view entry in the Object Browser, and close the Editing handlers. Double-click the changed entry to add its wrappers to the window s script. Add code so the handler reads as follows: --toggles false to true for application property hasChanged on changed theObject if name of theObject is "TextView" and my hasChanged is false then set my hasChanged to not my hasChanged end if end changed
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Step 7b: Test and Debug
Compile the script to check its syntax. Again, test run the project to make sure that both the earlier code and the new additions are all working correctly.
Step 8: Edit Credits Page
Even though adding a Credits page may seem like an unnecessary step, it adds a touch of professionalism to your project.
Step 9: Save Project
When you are satisfied, save the project. This is just the beginning of what could be a fully functional text editing application. As is, it can read text from a file and save the edited text. You may want to run it just to explore all the textediting capability that comes with a text view without you having to write one line of code.
Tutorial Wrap-Up
The goal of the tutorials was to introduce you to some of the ways you can use FaceSpan and to give a better understanding of what you can do with it. This is just the tip of the iceberg. There is so much
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