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BOOK: Beginning Mac OS X Programming
This is the forum to discuss the Wrox book Beginning Mac OS X Programming by Michael Trent, Drew McCormack; ISBN: 9780764573996
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Old July 12th, 2010, 02:03 AM
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Default Window Closes when Resizing in Carbon Simulator

I'm trying to follow the "Building a Resizable Carbon Window" section on page 120 of the 2005 "Tiger" edition of the text. If I create an empty Carbon project and add a window object from the Palette/Library (making sure that the Close, Minimize, Resize and Zoom buttons are all checked), run the Carbon Simulator and then attempt to resize the window by grabbing the resize control, the window vanishes.

However if I create a Carbon project that already has the window object included (i.e instead of an empty project where I add the window to after first creating) I have no problem resizing the window in that case.

I try to visually match the selections in the inspector to see what is different between the settings of these two cases but I don't readily notice any differences in these two sets of parameters that are displayed. Thus I a curious as whether there are more settings that just aren't displayed on the Inspector and where is the best most compete documentation available from Apple on the subject.

I am using IB 3.2.3

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Old July 18th, 2010, 12:16 AM
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Default

In case anyone else comes across this problem or finds this otherwise useful, I think I was able to (sort of) figure out the discrepancy examining the .nib file.

Both files have two keys defined: maxSize (under com.apple.ibtool.document.localizable-all) and gMaxSize (under com.apple.ibtool.document.objects). In the working file both of these have a string setting of {480, 270}. In the nonworking file they had a string setting of {0, 0}. Apparently the default configuration of the working file was setting the maximum size of the window equal to zero. In Inspector the Window Template Size tab had the "Maximum Size" box checked but a "0" for both Width and Height. I clicked the box once to clear the check. Ran the Carbon Simulator again and the window resized properly without disappearing. When I rechecked the box, Inspector automatically filled in the Width and Height parameters with valid values of 480 and 270. I ran the Carbon Simulator again and it resized properly in accordance with the new maximum size constraint.

I don't fully understand the XML code in the .nib file but apparently the default setting for the maximum size of the window was being set to zero. The incorrect code appeared in the .nib file as follows (with non relevant lines deleted):

Code:
<key>com.apple.ibtool.document.localizable-all</key>

<dict>
    <key>1</key>
    <dict>
        <key>maxSize</key>
        <string>{0, 0}</string>


<key>com.apple.ibtool.document.objects</key>

<dict>
    <key>1</key>
    <dict>
        <key>gMaxSize</key>
        <string>{0, 0}</string>
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