在NSMatrix中的NSButtonCell中显示文本之前的图像
我在NSMatrix中显示按钮。
我的要求是：
改变按钮标题的颜色和
当满足某些条件时，在标题的开头放置图像。
为此，我使用以下代码：
// setting attributed text
NSAttributedString *selectedCellAttribute;
NSFont *selectedCellFont = [NSFont fontWithName:@"Lucida Grande" size:11];
NSColor *selectedCellColor = [NSColor redColor];
NSMutableParagraphStyle *style = [[NSParagraphStyle defaultParagraphStyle] mutableCopy];
[style setAlignment:NSCenterTextAlignment];
// setting image
NSTextAttachment *imageAttachment = [[NSTextAttachment alloc] init];
NSCell *cell = [imageAttachment attachmentCell];
[cell setImage:[NSImage imageNamed:@"caution_small.png"]];
NSDictionary *selectedCellDictionary = [NSDictionary dictionaryWithObjectsAndKeys:imageAttachment,NSAttachmentAttributeName,selectedCellFont,NSFontAttributeName,selectedCellColor,NSForegroundColorAttributeName,style,NSParagraphStyleAttributeName,nil];
// recognizing cell
NSButtonCell *associatedCell = [associatesMatrix cellAtRow:0 column:2];
selectedCellAttribute = [[NSAttributedString alloc] initWithString:[associatedCell title] attributes:selectedCellDictionary];
[associatedCell setAttributedTitle:selectedCellAttribute];
NSCell *cell = [imageAttachment attachmentCell];
type 'id <NSTextAttachmentCell>' does not conform to 'NSCopying" protocol.
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脖呐
，并仅为字符串的该部分设置附件。 你可能想在和实际文本之间加一个空格。只有应该有附件属性。