Problems with image cell in table view (was: Re: NSImage -isValid not always right?)
Problems with image cell in table view (was: Re: NSImage -isValid not always right?)
- Subject: Problems with image cell in table view (was: Re: NSImage -isValid not always right?)
- From: j o a r <email@hidden>
- Date: Fri, 12 Apr 2002 19:56:59 +0200
Hello Ramesh,
You don't say where in your code the snippet is from. It doesn't seem to
really fit anywhere unfortunately... :)
I would set the cell type for columns in awakeFromNib - before they are
used, but after they have been loaded from the nib. You should not set
an image for the cell at this point - that is something you do later on
in the table data source methods. Something like this:
- (void) awakeFromNib
{
// Your other stuff
// Set the cell type
{
NSTableColumn *col = [myTableView
tableColumnWithIdentifier:@"ImageColumn"];
NSImageCell *myImageCell = [[NSImageCell alloc] init];
[col setDataCell:[myImageCell autorelease]];
}
}
- (id)tableView:(NSTableView *)aTableView
objectValueForTableColumn:(NSTableColumn *)aTableColumn row:(int)rowIndex
{
if ([[aTableColumn identifier] isEqualToString:@"ImageColumn"]) {
// Here you must make sure to return a proper object value for the
// cell, or else you will get errors
return [NSImage imageNamed:@"image.giff"];
} else {
NSLog(@"This should never happen");
return nil;
}
}
j o a r
On Friday, April 12, 2002, at 06:56 , Peesapaty Ramesh wrote:
Hi,
i am trying to display a image in tableView .
the code is as follows.
NSImageCell *myImageCell;
NSTableColumn *col = [folderList
tableColumnWithIdentifier:@"folder"];
NSImage *myImage = [[NSImage alloc]
initWithContentsOfFile:@"folder.gif"];
if ([myImage isValid]){
NSLog(@"Image is valid");
}
if ([myImage isKindOfClass:[NSImage class]]){
NSLog(@"YES");
}
myImageCell = [[NSImageCell alloc] init];
[myImageCell setImage:myImage];
[col setDataCell:myImageCell];
when it is setting value in the tablecolumn it is giving following
error.
"NSImageCell's object value must be an NSImage."
am i missing anything.
thanks in advance.
Ramesh
_______________________________________________
cocoa-dev mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/cocoa-dev
Do not post admin requests to the list. They will be ignored.
_______________________________________________
cocoa-dev mailing list | email@hidden
Help/Unsubscribe/Archives:
http://www.lists.apple.com/mailman/listinfo/cocoa-dev
Do not post admin requests to the list. They will be ignored.