Qt for Mac点击dock事件处理

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在Mac osx的dock中单击我们自己的程序图标时，如何来实现显示界面或者其他的操作呢？

首先包含头文件objc.h跟message.h，然后定义两个函数setupDockClickHandler(安装Dock点击处理程序) 以及 dockClickHandler(接收dock点击处理)

#ifdef Q_OS_MAC#include <objc/objc.h>#include <objc/message.h>void setupDockClickHandler();bool dockClickHandler(id self,SEL _cmd,...);#endif

实现部分的代码

#ifdef Q_OS_MACvoid setupDockClickHandler() {    Class cls = objc_getClass("NSApplication");    objc_object *appInst = objc_msgSend((objc_object*)cls, sel_registerName("sharedApplication"));    if(appInst != NULL) {        objc_object* delegate = objc_msgSend(appInst, sel_registerName("delegate"));        Class delClass = (Class)objc_msgSend(delegate,  sel_registerName("class"));        SEL shouldHandle = sel_registerName("applicationShouldHandleReopen:hasVisibleWindows:");        if (class_getInstanceMethod(delClass, shouldHandle)) {            if (class_replaceMethod(delClass, shouldHandle, (IMP)dockClickHandler, "B@:"))                qDebug() << "Registered dock click handler (replaced original method)";            else                qWarning() << "Failed to replace method for dock click handler";        }        else {            if (class_addMethod(delClass, shouldHandle, (IMP)dockClickHandler,"B@:"))                qDebug() << "Registered dock click handler";            else                qWarning() << "Failed to register dock click handler";        }    }}bool dockClickHandler(id self,SEL _cmd,...) {    Q_UNUSED(self);    Q_UNUSED(_cmd);        //显示窗口//    QWidget w;//    w.show();    //    // Return NO (false) to suppress the default OS X actions    return false;}#endif

然后我们在main.cpp中

#ifdef Q_OS_MAC    setupDockClickHandler();#endif

这样就可以实现mac dock点击事件了

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