小编gla*_*ish的帖子

为了在按钮上创建翻转效果,我创建了一个名为Button的NSButton子类.

Button.h:

#import <AppKit/AppKit.h>

@interface Button : NSButton {
}

- (void)mouseEntered:(NSEvent *)theEvent;
- (void)mouseExited:(NSEvent *)theEvent;
- (void)mouseDown:(NSEvent *)ev;
- (void)mouseUp:(NSEvent *)theEvent;

@end

Button.m:#import"Button.h"

@implementation Button

- (id)initWithFrame:(NSRect)frameRect  {
    self = [super initWithFrame:frameRect];
    if(self != nil) {
    NSLog(@"btn init");
}
    return self;
}


- (void)mouseEntered:(NSEvent *)theEvent{
    NSLog(@"mouseEntered");
    [self setImage:[NSImage imageNamed:@"lockIcon_2.png"]];
    [self setNeedsDisplay];
}
- (void)mouseExited:(NSEvent *)theEvent{
    [self setImage:[NSImage imageNamed:@"lockIcon_1.png"]];
    NSLog(@"mouseExited");  
    [self setNeedsDisplay];
}

- (void)mouseDown:(NSEvent *)ev {
    NSLog(@"mouseDown!");
}

- (void)mouseUp:(NSEvent *)ev {
    NSLog(@"mouseUp!");
}

@end

使用上面的代码,每次我点击一个按钮,我在日志中看到"mouseDown",但我没有看到"mouseEntered"或"mouseExited"(当然看不到图像更改)?? 可悲的是,我知道我错过了一些明显的东西,但我只是没有看到它...... ???

好吧......凌晨2点,这是我划线的地方.帮助......在我的笔记本电脑最终走出窗外之前.:)

我已经尝试过使用setTimer,回调以及我能想到的其他一切(当然还有其他一些Stackoverflow提示).我已经删除了所有内容,所以我只留下基本代码.

我要做的是调用parseRow()并在最后保存记录之前,我需要获取相关的类别(通过AJAX); 然而,它吹过它,所以类别总是"未定义".

function parseRow(row){
    var rowArray     = row.trim().split(",");
    var date         = rowArray[0];
    var checknum     = rowArray[1];
    var payee        = rowArray[2];
    var memo         = rowArray[3];
    var amount       = rowArray[4];

    //ERROR: blows right past this one and sets the category variable BEFORE ajax returns
    var category = autoSelectCategory(payee);

    saveRecord(date, checkNum, payee, memo, category, payment, deposit);
}

function autoSelectCategory(payee) {
    var data;
    $.ajax({
        async: false,
        url: "autoselectcategory",
        dataType: "json",
        data: {
            string: payee
        },
        success: function (returnedData) {
            data = returnedData; …