common MessageBox Inherits QMessageBox

说明：
1。 支持用户需要增加的控件
2。 布局通过QGridLayout来实现(类似html的Table)
3. 支持Url打开网页

4. 由于是测试，只关注功能的实现，没有进行封装，若是自定义皮肤，涉及到QMessageBox自带的slots问题，暂时还没有想到好的解决办法

 

/***************************/

main.cpp

 

#include
#include "immessagebox.h"

int main(int argc, char *argv[])
{
 QApplication a(argc, argv);
 ImMessageBox w;
 QLabel* pLink = new QLabel("google");
 pLink->setText("");
 QLabel* pLink2 = new QLabel("sina");
 pLink2->setText("");

 w.addWidgetEx(pLink, 6, 1, Qt::AlignLeft, true);
 w.addWidgetExt(pLink2, 6, 2, 1, 3,Qt::AlignLeft,true);
 w.show(); return a.exec();
}

 

/***************************/

immessagebox.h

#ifndef IMMESSAGEBOX_H
#define IMMESSAGEBOX_H

#include

class ImMessageBox : public QMessageBox
{
 Q_OBJECT

public:
 ImMessageBox(QWidget *parent = 0);
 ImMessageBox( const QString & title, const QString & text, QWidget *parent=0);
 ~ImMessageBox();

 

void addWidgetEx ( QWidget * widget, int row, int column, Qt::Alignment alignment = 0, bool bLink=false );
 void addWidgetExt ( QWidget * widget, int fromRow, int fromColumn, int rowSpan, int columnSpan,
        Qt::Alignment alignment = 0, bool bLink=false );

public slots:
 void onOpenUrl(const QString &url);

};

#endif // IMMESSAGEBOX_H

 

 

/***************************/

immessagebox.cpp

 

#include
#include
#include "immessagebox.h"

ImMessageBox::ImMessageBox(QWidget *parent)
 : QMessageBox(QMessageBox::Warning, "", "", 0, parent, Qt::Sheet)
{
 setFixedWidth(200);
 QCheckBox dontPrompt("Do not prompt again", this);
 QCheckBox dontPrompt2("Do not prompt again8888888", this);
 QLineEdit* pEdit = new QLineEdit("Input Text");

 QPushButton* pAdd = new QPushButton("add");
 QPushButton* pSave = addButton(QMessageBox::Save);
 QPushButton* pOK = addButton(QMessageBox::Close);
 // 对Label不对换行的改进测试

QString newStr;
 QString str("ddddddddd0 ddddddddd1  12233445566778899中期苛啊是的法ccddeef3 fggddddd5 dddd4 ddd5555ddd7 dddddddd8 ddddddd9 ddddq ddddddww");
 while(str.length() > 20)
 {
  QChar c = str.at(20);
  bool bLN = c.isLetterOrNumber();
  if (!bLN)
  {
   newStr += str.left(20) + "\n";
   str.remove(0, 20) ;
  }
  else
  {
   QString tmpStr = str.left(20);
   int nPos = tmpStr.lastIndexOf(" ");
   nPos = nPos>0?nPos:20;
   newStr += str.left(nPos) + "\n";
   str.remove(0, nPos) ;
  }  
 }
 newStr += str;
 QLabel* pLabel = new QLabel(newStr);
 pLabel->setWordWrap(true);

 pLabel->setIndent(20);
 QSpacerItem *pSpacer = new QSpacerItem(40, 20, QSizePolicy::Expanding, QSizePolicy::Minimum);

 QComboBox* pCombox = new QComboBox();
 pCombox->addItem("aaaa");
 pCombox->addItem("bbbb");
 pCombox->addItem("CCCC");

 dynamic_cast< QGridLayout *>(layout())->addWidget(pLabel, 0, 1, 1, 4);
 dynamic_cast< QGridLayout *>(layout())->addWidget(&dontPrompt, 2, 1,1,4);
 dynamic_cast< QGridLayout *>(layout())->addWidget(&dontPrompt2, 3, 1,1,2);
 dynamic_cast< QGridLayout *>(layout())->addWidget(pEdit, 3, 3,1,2);
 
 dynamic_cast< QGridLayout *>(layout())->addWidget(pCombox, 5, 1, 1, 4);
 
 dynamic_cast< QGridLayout *>(layout())->addItem(pSpacer, 8, 1);
 dynamic_cast< QGridLayout *>(layout())->addWidget(pAdd, 8, 2);
 dynamic_cast< QGridLayout *>(layout())->addWidget(pSave, 8, 3);
 dynamic_cast< QGridLayout *>(layout())->addWidget(pOK, 8, 4);

 // replace default icon
 QPixmap map("bmp.png");
 setIconPixmap(map);
}

ImMessageBox::ImMessageBox( const QString & title, const QString & text, QWidget *parent)
: QMessageBox(parent)
{
 setWindowTitle(title);
}

ImMessageBox::~ImMessageBox()
{

}

void ImMessageBox::onOpenUrl(const QString &url)
{
 bool bRet = QDesktopServices::openUrl(url);
 qDebug() << url;
}

void ImMessageBox::addWidgetEx ( QWidget * widget, int row, int column, Qt::Alignment alignment, bool bLink )
{
 dynamic_cast< QGridLayout *>(layout())->addWidget(widget, row, column, alignment);
 if (bLink)
 {
  connect(widget, SIGNAL(linkActivated(const QString &)), this, SLOT(onOpenUrl(const QString &)));
 }
}

void ImMessageBox::addWidgetExt ( QWidget * widget, int fromRow, int fromColumn, int rowSpan, int columnSpan, Qt::Alignment alignment, bool bLink )
{
 dynamic_cast< QGridLayout *>(layout())->addWidget(widget, fromRow, fromColumn, rowSpan, columnSpan, alignment);
 if (bLink)
 {
  connect(widget, SIGNAL(linkActivated(const QString &)), this, SLOT(onOpenUrl(const QString &)));
 }
}

 

改进后的调用方法：

void MainWindow::msgBoxTest()
{
 ImMessageBox msgBox(QMessageBox::Information, "msgTitle", "ssssContent", QMessageBox::NoButton, this);
 //ImMessageBox msgBox("msgTitle", this);
 QLabel* pLabel = new QLabel("ddddddddddddddddddddddddddd", this);
 msgBox.addWidget(pLabel, 0, 1, 1, 4);
 
 QCheckBox dontPrompt("Do not prompt again", this);
 QCheckBox dontPrompt2("Do not prompt again8888888", this);
 QLineEdit* pEdit = new QLineEdit("Input Text");
 QPushButton* pAdd = new QPushButton("add");
 QPushButton* pSave = msgBox.addButton(QMessageBox::Save);
 QPushButton* pOK = msgBox.addButton(QMessageBox::Close);
 
 QSpacerItem *pSpacer = new QSpacerItem(40, 20, QSizePolicy::Expanding, QSizePolicy::Minimum);
 QSpacerItem *pSpacer2 = new QSpacerItem(40, 20, QSizePolicy::Expanding, QSizePolicy::Minimum);
 QComboBox* pCombox = new QComboBox();
 pCombox->addItem("aaaa");
 pCombox->addItem("bbbb");
 pCombox->addItem("CCCC");

 QLabel* pLink = new QLabel("google");
 pLink->setText("");
 QLabel* pLink2 = new QLabel("sina");
 pLink2->setText("");
 
 
 msgBox.addWidget(&dontPrompt, 1, 1, 1, 4);
 msgBox.addWidget(&dontPrompt2, 2, 1, 1, 4);
 msgBox.AddIconPixmap("bmp.png", 3, 0,1,1);
 msgBox.addWidget(pEdit, 3, 3,1,2);
 msgBox.addWidget(pCombox, 5, 1, 1, 2);
 msgBox.addItem(pSpacer2, 5, 2, 1, 2);
 msgBox.addLinkLabel(pLink, 6, 1, Qt::AlignLeft, true);
 msgBox.addLinkLabel(pLink2, 6, 2, Qt::AlignLeft,true);
 msgBox.setSpacing(10);
 msgBox.addItem(pSpacer, 8, 1);
 msgBox.addWidget(pAdd, 8, 2);
 msgBox.addWidget(pSave, 8, 3);
 msgBox.addWidget(pOK, 8, 4);
 // replace default icon
 /*QPixmap map("bmp.png");
 msgBox.setIconPixmap(map);*/

 msgBox.exec();
}

效果图：

 

 

 

改变QMessageBox的大小 :

class MyMessageBox : public QMessageBox {
protected:
void showEvent(QShowEvent* event) {
QMessageBox::showEvent(event);
setFixedSize(640, 480);
}
};

 

 

它还存在问题，就是text用的是Label,不能自动换行，用QTextEdit替换即可(当然QTextEdit要做一些属性上的个性，让它看起来象Label)

 

QString stringToLines(const QString &src, int _lenth)
{
 QString retStr;
 if (!src.isEmpty())
 { 
  QByteArray str = src.toLocal8Bit();
  while(str.length() > _lenth)
  {
   str = str.trimmed();
   bool bDouble = false;
   int nLen = _lenth;
   char c = str.at(nLen-1);
   char c1 = str.at(nLen);
   if (c1 &0x80 )
   {
    bDouble = true;
   }
   
   {
    QByteArray tmpStr = str.left(nLen);
    int nPos = nLen;
    if (!bDouble)
    {
     // when last word of string is char, find last space of string
     nPos = tmpStr.lastIndexOf(" ");
     nPos = nPos > 0 ? nPos : nLen;
    }
    else
    {
     // when last word of string is not char, get string byte length
     QString sStr = QString(tmpStr);
     QByteArray bStr = sStr.toLocal8Bit();
     nPos = bStr.length();
    }
    
    retStr += QString(str.left(nPos)) + "\n";
    str.remove(0, nPos) ;
   }  
  }//endw
  retStr += str;
 }
 else
 {
  //TGLOGFILE(("string is NULL"), ("string is NULL"));
 }

 return retStr;
}