Re: Dynamically Updating Column Titles in NSTableView with Mouse Events
Re: Dynamically Updating Column Titles in NSTableView with Mouse Events
- Subject: Re: Dynamically Updating Column Titles in NSTableView with Mouse Events
- From: Jeff Gilbert <email@hidden>
- Date: Mon, 19 Jul 2010 21:20:47 -0500
Hi Peter,
On Jul 19, 2010, at 8:54 PM, Peter Zegelin wrote:
> I am trying to dynamically update the titles of my table columns to show the current row that the mouse is over. I am using an NSTrackingArea to get the mouseEnter, mouseMove and mouseExit events and then calling the following method ( in my delegate ) to update the column titles. Unfortunately the column titles never change, though the printf statement shows that the method is being called correctly:
>
> - (void)setColumnTitlesForMouseAt:(int)row{
>
> if(row == rowForColumnTitles) // just to prevent unnecessary updating
> return;
>
> rowForColumnTitles = row;
>
> printf("\n x: ",row);
>
> NSTableColumn* column;
> int i;
>
> for(i = 1; i <= 16; ++i){
> column = [[itsTableView tableColumns] objectAtIndex:i];
> [[column headerCell] setStringValue:[NSString stringWithFormat:@"X",rowForColumnTitles]];
> }
>
> //[itsTableView displayIfNeeded];
> //[itsTableView setNeedsDisplay: YES];
> }
I do something similar and found the following works for me:
// update column headers
...
// force the table to redraw the headers
[[table headerView] setNeedsDisplay:YES];
Good luck,
Jeff Gilbert
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