点击NSButton白色背景 [英] NSButton white background when clicked

问题描述

当使用自定义图像和替代图像创建Cocoa斜角按钮时，我有一个奇怪的行为。在按下状态下，按钮背景变为白色。
我将该按钮添加为透明窗口（HUD窗口）的子视图。

When creating Cocoa bevel button with custom image and alternate image I'm having a strange behavior. In the pressed state the button background becomes white. I'm adding the button as subview of a transparent window (HUD window).

我尝试每个我知道的技术：

I'm trying every technique that I know:

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。

在附加的屏幕截图中看到错误的行为：

You can see the wrong behavior in the attached screenshots:

重叠HUD窗口的斜面按钮：

Bevel button overlaying a HUD window:

斜角按钮背景错误：

< img src =https://i.stack.imgur.com/Qv91T.pngalt =错误斜角按钮背景>

Wrong bevel button background:

推荐答案

创建按钮

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

添加按钮到窗口

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];

这篇关于点击NSButton白色背景的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！