window size out of control , error is setGeometryDp: Unable to set geometry

hi , all.

my Widget use flowlayout (Qt example) and QWebView.

but When the window display , size out of control.

I don't know what happened.

print "setGeometryDp: Unable to set geometry 727x262+356+299 on QWidgetWindow/'WidgetWindow'. Resulting geometry: 727x662+356+299 (frame: 8, 30, 8, 8, custom margin: 0, 0, 0, 0, minimum size: 40x62, maximum size: 16777215x16777215)."

w_mailview.h

Code:

#ifndef W_MAILVIEW_H
#define W_MAILVIEW_H
 
#include <QWidget>
#include <QVBoxLayout>
#include <QHBoxLayout>
#include <QWebView>
#include "qflowlayout.h"
 
class W_MailAddress;
class W_MailView_Details;
 
class W_MailView : public QWidget
{
    Q_OBJECT
public:
    explicit W_MailView(QWidget *parent = 0);
    ~W_MailView();
    void initUI();
private:
    QVBoxLayout * m_vbLayoutMain;
    W_MailView_Details * m_wgt_details;
    QWebView * m_wv_mail;
 
};
 
class W_MailView_Details : public QWidget{
    Q_OBJECT
public:
    explicit W_MailView_Details(QWidget * parent = 0);
    ~W_MailView_Details();
 
    void initUI();
    void init();
 
private:
    bool m_bInit;
    QVBoxLayout * m_vbLayoutDetailsMain;
    W_MailAddress * m_wgtAddress_recipient;
 
};
 
class W_MailAddress : public QWidget{
    Q_OBJECT
public:
    explicit W_MailAddress(QWidget * parent = 0);
    ~W_MailAddress();
private:
    QFlowLayout * m_flowlayout;
};
 
#endif // W_MAILVIEW_H

this is w_mailview.cpp

Code:

#include "w_mailview.h"
W_MailView::W_MailView(QWidget *parent) : QWidget(parent)
{
    m_vbLayoutMain = new QVBoxLayout();
    this->setLayout(m_vbLayoutMain);
    m_vbLayoutMain->setContentsMargins(0,0,0,0);
    m_vbLayoutMain->setSpacing(0);
    initUI();
}
 
W_MailView::~W_MailView(){
 
}
 
void W_MailView::initUI(){
    m_wgt_details = new W_MailView_Details(this);
    m_wgt_details->init();
    m_wgt_details->setMaximumHeight(40);
    m_wgt_details->setMinimumHeight(40);
    m_vbLayoutMain->addWidget(m_wgt_details);
 
    m_wv_mail = new QWebView(this);//if QWebView replace with QWidget , normal
    m_vbLayoutMain->addWidget(m_wv_mail);
}
 
W_MailView_Details::W_MailView_Details(QWidget *parent){
    m_bInit = false;
}
 
W_MailView_Details::~W_MailView_Details(){
 
}
 
void W_MailView_Details::init(){
    initUI();
}
 
void W_MailView_Details::initUI(){
    m_vbLayoutDetailsMain = new QVBoxLayout(this);
    m_wgtAddress_recipient = new W_MailAddress(this);
    m_vbLayoutDetailsMain->addWidget(m_wgtAddress_recipient);
 
    //è®¾ç½®èƒŒæ™¯ffffff
    QPalette pal(this->palette());
    pal.setColor(QPalette::Background,QColor("#ffffff"));
    this->setAutoFillBackground(true);
    this->setPalette(pal);
}
 
///////////////////////////////////////////
/// \brief The W_MailAddress class
///
W_MailAddress::W_MailAddress(QWidget *parent)
    :QWidget(parent)
{
    m_flowlayout = new QFlowLayout;
    m_flowlayout->setContentsMargins(0,0,0,0);
    m_flowlayout->setSpacing(0);
    this->setLayout(m_flowlayout);//if unuse flowlayout , normal
}
 
W_MailAddress::~W_MailAddress(){
    if(m_flowlayout)
        delete m_flowlayout;
    m_flowlayout = NULL;
}