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Toggling the checkbox on & off alternates between these two images: Now in the Label’s MouseDown, put this code:
Xojo label tutorial code#
The window should look similar to this:ĭouble-click the checkbox and add the following code to the Action event: Title the Label “Checkbox is OFF”, and set it so that the text is right justified. In the window, drag in a Checkbox & a Label. The Checkbox 25/02/13 03:26 Filed in: Xojo2ObjC Notice we do essentially the same thing as with the NSPopUpButton, but the way we obtain the text is different:
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Remember that the NSComboBox uses the delegate mechanism instead of the action mechanism, so we must invoke the proper method, which conveniently is called “comboBoxSelectionDidChange”. First we grab the popUp’s current text, then we display a dialog box, just as we did before. Now that the action has been created, enter the code below. m file, when the PopUpWindow appears, change it to look like this and hit Connect: In split view, with AppDelegate.m on one side and MainMenu.xib on the other, select the NSPopUpButton on the window, Control-Drag from the NSPopUpButton to the. Let’s add our action to receive NSPopUpButton selection changes. After a second or two the warning will disappear. In the header, change the line to look like the image below and flip back to your. Let’s fix that by changing to the AppDelegate.h file you can use keyboard shortcut Control-Command-UpArrow to flip back and forth between any associated. After you’ve typed the above code, you are seeing the “warning” icon next to the _legate = self line. The NSPopUpButton will send us an IBAction when the selection has changed while the NSComboBox uses the delegate mechanism. In Objective-C, while the NSPopUpButton & NSComboBox look similar, they function differently. Notice the differences between filling the two controls with data. Now let’s set up our controls in the applicationDidFinishLaunching event, just as we did previously. Again, if you need detailed help with this, check out the first entry about the PushButton which goes into great detail. Name the NSPopUpButton thePopUp, and the NSComboBox theCombo. Control-Drag from each control to the section. Then put Xcode into split pane view so you have MainMenu.xib on one side and AppDelegate.m on the other. Go to your AppDelegate.m file, and under the #import line, type the AppDelegate() and lines. Choose the MainMenu.xib and drag in an NSPopUpButton and an NSComboBox. If you need help with this, check out the first entry about the PushButton which goes into great detail. Choose a name for your project, make sure Automatic Reference Counting (ARC) is checked and Document Based Application is unchecked. Choose OS X Application & Cocoa Application. Launch Xcode, and choose File -> New Project. Run the project and you will see MsgBoxes when you change the menu selection: In the PopUp’s Change event, we put the following notification code:Īnd, almost identical code in the ComboBox’s Change event: Then in the window’s open event, we set up our controls and the property: The first thing we need to do is create a new Boolean property so we won’t see MsgBoxes when we launch the app: Name the PopUpMenu “thePopUp” and the ComboBox “theCombo”. Drag a PopUpMenu control and a ComboBox control onto the window. PopUpMenus & ComboBoxes 13/03/13 14:24 Filed in: Xojo2ObjC Home Contact Us Lessons: From Xojo to ObjC Christian's SoapboxĮxpect Updates Soon 22/10/13 00:50 Now that Xojo 2013 R3 is out, and Xcode 5 is no longer under NDA, expect more tutorials soon! Thank you for your support!