QComboBox子类中的断点不工作

我已将子类QComboBox自定义为特殊需要。该子类用于在来自QtDesigner的ui文件中提升QComboBoxes。除了当我在一个插槽中放置一个断点时，所有程序都可以工作，程序不会停在断点处。但我知道它是从它产生的结果中调用的。我检查了我的程序中的其他插槽，并且它们可以很好地处理断点。做一个干净的和重建所有没有解决它。有什么可能导致这种情况，我能做些什么呢？所讨论的槽是子类中唯一的槽，称为“do_indexChanged（）”。您可以在类头文件的第37行找到插槽，并在类源文件的第10行找到信号插槽连接。
类的头：QComboBox子类中的断点不工作

#ifndef WVQCOMBOBOX_H 
#define WVQCOMBOBOX_H 

#include <QWidget> 
#include <QObject> 
#include <QComboBox> 
#include <QVariant> 



class wvQComboBox : public QComboBox 
{ 
Q_OBJECT 
//Q_PROPERTY(bool writeEnable READ writeEnable WRITE setWriteEnable) 
public: 
    explicit wvQComboBox(QWidget *parent = 0); 
    bool writeEnable() { 
     return this->property("writeEnable").toBool(); 
    } 
    void setWriteEnable(const bool & writeEnable){ 
     this->setProperty("writeEnable",writeEnable); 
    } 

    bool newValReady() { 
     return this->property("newValReady").toBool(); 
    } 
    void setNewValReady(const bool & newValReady){ 
     this->setProperty("newValReady",newValReady); 
    } 
    QString getNewVal(); 
    int getNewValIndex(); 



    int oldVal; //comboBox Index before user edit began 
private slots: 
    void do_indexChanged(){ 
     this->setWriteEnable(true); 
     if(oldVal!=currentIndex()){ 
      this->setNewValReady(true); 
      oldVal=currentIndex(); 
     } 
    } 

protected: 
    void focusInEvent (QFocusEvent * event); 
    //void focusOutEvent (QFocusEvent * event);//dont need because of currentIndexChanged(int) 
}; 

#endif // WVQCOMBOBOX_H 


#include "wvqcombobox.h" 

wvQComboBox::wvQComboBox(QWidget *parent) : 
    QComboBox(parent) 
{ 
    this->setWriteEnable(true); 
    this->setNewValReady(false); 
    oldVal=this->currentIndex(); 

    connect(this,SIGNAL(currentIndexChanged(int)),this,SLOT(do_indexChanged())); 
} 

void wvQComboBox::focusInEvent (QFocusEvent * event) { 
    this->setWriteEnable(false); 
    oldVal=this->currentIndex(); 
} 


QString wvQComboBox::getNewVal(){ 
    setNewValReady(false); 
    return this->currentText(); 
} 

int wvQComboBox::getNewValIndex(){ 
    setNewValReady(false); 
    return this->currentIndex(); 
}

来源

2010-06-01 yan bellavance