单击时NSButton白色背景

Question

当使用自定义图像和替代图像创建Cocoa斜角按钮时,我有一种奇怪的行为.在按下状态下,按钮背景变为白色.我将按钮添加为透明窗口(HUD窗口)的子视图.

我正在尝试我所知道的每一项技巧:

NSButton *closeButton = [[NSButton alloc] initWithFrame:NSMakeRect(0.0, 0.0, 30.0, 30.0)];
        [closeButton setFrameOrigin:NSMakePoint(0.0, 0.0)];
        [closeButton setImagePosition:NSImageOnly];
        [closeButton setAction:@selector(closeWindowAction:)];
        [closeButton setBordered:NO];
        [closeButton setTransparent:NO];

        [closeButton setImage:[NSImage imageNamed:@"icon-tclose-off"]];
        [closeButton setAlternateImage:[NSImage imageNamed:@"icon-tclose-on"]];
        [closeButton setBezelStyle:NSShadowlessSquareBezelStyle];
        [closeButton setButtonType:NSMomentaryLightButton];

        //[[closeButton cell] setBackgroundColor:[NSColor clearColor]];
        [[closeButton cell] setHighlightsBy:NSChangeBackgroundCellMask|NSCellLightsByContents];
        //[[closeButton cell] setHighlightsBy:NSContentsCellMask];
        //[[closeButton cell] setShowsStateBy:0|NSContentsCellMask];

我也试过了

[closeButton setButtonType:NSMomentaryChangeButton];

[[closeButton cell] setHighlightsBy:NSContentsCellMask];

没有结果.

您可以在附加的屏幕截图中看到错误的行为:

斜角按钮覆盖HUD窗口:

错误的斜角按钮背景:

Answer 1

根据您的具体情况,这可能也有效:

将按钮的样式更改为斜角或方形,模式应设置为"瞬间更改",边框,透明,混合和选定应为OFF.这就是我修复按钮上的白色背景问题的方法.

Answer 2

创建按钮

NSButton *myButton;
myButton = [[NSButton new] autorelease];
[myButton setTitle: @"Hello!"];
[myButton sizeToFit];
[myButton setTarget: self];
[myButton setAction: @selector (function:)];

将按钮添加到窗口

unsigned int styleMask = NSTitledWindowMask 
                           | NSMiniaturizableWindowMask;
NSWindow *myWindow;
myWindow = [NSWindow alloc];
/*get the size of the button*/
NSSize buttonSize;
buttonSize = [myButton frame].size;
/*set window content rect with the size of the button, and with an origin of our choice; (100, 100)*/
NSRect rect;
rect = NSMakeRect (100, 100, 
                   buttonSize.width, 
                   buttonSize.height);

myWindow = [myWindow initWithContentRect: rect
                       styleMask: styleMask
                       backing: NSBackingStoreBuffered
                       defer: NO];
[myWindow setTitle: @"my window"];
/*replacing the default window content view with our button*/
[myWindow setContentView: myButton];