Hi, Some time ago I asked this list for help with a "Newbie problem" which was really about Cocoa rather than PyObjC: to determine which button of a set of radio buttons (NSMatrix) was selected. Bob Ippolito kindly suggested the following elegant filter solution (given radioMatrix as an outlet, and getRadio_() as the action to PyAppDelegate: def getRadio_(self): selectedCells = filter(lambda cell: cell.intValue() == 1, self.radioMatrix.cells()) This actually seemed to work 1.5 years ago. I can't verify that now easily. Today I had occasion to go back to this code and it clearly has a problem. The list of cells with intValue() == 1 includes both the currently selected cell and the previously selected one. Each time I select a new button, I get two positives from the filter, unless I choose the same button twice in a row. Even selectedCells() is supposed to return both selected and *highlighted* cells, according to the docs. In my tests, selectedCells() returns the correct value, but it seems better to use selectedCell(). Or, selectedRow() (for a single column matrix) can also be queried to get the correct value. I don't know if this is surprising or it's obvious to everybody. FYI. Thanks for all your help. Someday I intend to write a FAVSQ for PyObjC (FA very simple Q). I think it's wonderful what you've done, but even simple things have taken me quite a while to figure out. And I think a helpful thing would be to dissect out very simple examples of all common situations. Tom Elliott |
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