问题命名NSTableColumn

Question

我试图用一个空字符串作为标识符创建列，但可可似乎替换为空字符串字“场”每次我试图创建列时间。你怎么去解决这个？

- (void)addColumnWithCheckboxToTable:(NSTableView *)table
{
    // Add column with checkbox before all other columns
    // This column will have no title and should be as wide as the checkbox
    NSTableColumn *column = [[[NSTableColumn alloc] initWithIdentifier:@" "] autorelease];

    // The checkbox is to be initialised without a title
    NSButtonCell *checkbox = [[[NSButtonCell alloc] initTextCell:@" "] autorelease];
    [checkbox setEditable:YES];
    [checkbox setButtonType:NSSwitchButton];
    [checkbox setImagePosition:NSImageOnly];
    [checkbox setControlSize:NSSmallControlSize];

    // Add column with checkbox to table
    [column setDataCell:checkbox];

    // Add column to table
    [table addTableColumn:column];
}

Answer 1

一个列的标识符是不一样的东西作为其标题。你要设置其-headerCell的字符串值：

[[columnColumn headerCell] setStringValue:@""];