Hi, i returned with new problem
as you know i have like that
in the main i make
Qt Code: 
  1. #include <QApplication>
  2. #include "my_interface.h"
  3. int main(int argc, char **argv)
  4. {
  5.     QApplication app(argc, argv);
  6.     MainWindow window;
  7.     window.show();
  8. 	window.setViewNum(1);//or window.setViewNum(4);
  9.  
  10.     return app.exec();
  11. }
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in mainwindow.h i make like that
Qt Code: 
  1. class MainWindow : public QMainWindow
  2. {
  3.     Q_OBJECT
  4. public:
  5.     MainWindow();
  6.    void setViewNum(int num);
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and in the .cpp
Qt Code: 
  1. MainWindow::MainWindow()
  2. {
  3.  
  4.     mQOgreWidget = new QOgreWidget(this);
  5.  
  6.     setCentralWidget(mQOgreWidget);
  7.  
  8.     if(mQOgreWidget->isVisible())
  9.         mQOgreWidget->setViewNum(1);//or  mQOgreWidget->setViewNum(4);
  10.  
  11. }
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and in QOgreWidget.h
Qt Code: 
  1. public slots :
  2. void setViewNum(int num);
  3. void setCameraPosition(const Ogre::Vector3 &pos);
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in QOgreWidget.cpp
Qt Code: 
  1. void QOgreWidget::setViewNum(int num)
  2. {
  3.          if(num == 1)
  4.      {
  5.  
  6. 		  QWidget *central0 = new QGroupBox("My Scene", this);
  7.      float wi0=central0->width();
  8. 	 float hi0=central0->height();
  9.  
  10.      QOgreRenderWindow * orw0 = new QOgreRenderWindow(QString("View2"),mSceneMgr,mRoot,nb_cam,wi0,hi0); 
  11.  
  12.     QHBoxLayout* Layout0 = new QHBoxLayout();
  13.     Layout0->addWidget(orw0);
  14.  
  15.     central0->setLayout(Layout0);
  16.  
  17.  
  18.     mVerticalLayout->addWidget(central0);
  19.  
  20.      }
  21. 	   if(num == 4)
  22.     {
  23.  
  24.         QHBoxLayout* mainlayout = new QHBoxLayout();
  25.  
  26.     QGridLayout* rightSide = new QGridLayout;
  27. 	/////////////////////////////////////////////////////////////////////////////////////////
  28. 	QWidget *central = new QGroupBox("My Scene", this);
  29. 	//QLabel* orw = new QLabel("i am",central);
  30. 	 float wi=central->width();
  31. 	 float hi=central->height();
  32. 	 QOgreRenderWindow *orw = new QOgreRenderWindow(QString("View0"),mSceneMgr,mRoot,nb_cam,wi,hi); 
  33. 	  mQOgreRenderWindowList.append(orw);
  34. mainlayout->addWidget(orw);
  35.     central->setLayout(mainlayout);
  36. 	/////////////////////////
  37. 	QWidget *central1 = new QGroupBox("0,0", this);
  38. 	 float wi1=central1->width();
  39. 	 float hi1=central1->height();
  40. 	 QOgreRenderWindow * orw1 = new QOgreRenderWindow(QString("View1"),mSceneMgr,mRoot,nb_cam,wi1,hi1); 
  41. 	  mQOgreRenderWindowList.append(orw1);
  42.  
  43.  
  44. 	 QHBoxLayout* Layout1 = new QHBoxLayout();
  45.     Layout1->addWidget(orw1);
  46. 	central1->setLayout(Layout1);
  47. 	/****************************/
  48. 	QWidget *central2 = new QGroupBox("0,1", this);
  49.  wi=central2->width();
  50. 	 hi=central2->height();
  51.  
  52. 	  QOgreRenderWindow *orw2 = new QOgreRenderWindow(QString("View2"),mSceneMgr,mRoot,nb_cam,wi,hi); 
  53. 	   mQOgreRenderWindowList.append(orw2);
  54. 	 QHBoxLayout* Layout2 = new QHBoxLayout();
  55.     Layout2->addWidget(orw2);
  56. 	central2->setLayout(Layout2);
  57.  
  58.  
  59.  
  60. 	////////////////////////////////////////////////////////////////////*
  61. 	QWidget *central3 = new QGroupBox("0,2", this);
  62. 	  wi=central3->width();
  63. 	 hi=central3->height();
  64.  
  65. 	 QOgreRenderWindow * orw3 = new QOgreRenderWindow(QString("View3"),mSceneMgr,mRoot,nb_cam,wi,hi); 
  66. 	  mQOgreRenderWindowList.append(orw3);
  67. 	 QHBoxLayout* Layout3 = new QHBoxLayout();
  68.     Layout3->addWidget(orw3);
  69. 	central3->setLayout(Layout3);
  70. 	/////////////////////////////////////////////////////////
  71. 	QWidget *central4 = new QGroupBox("1,0", this);
  72. 	 wi=central4->width();
  73. 	 hi=central4->height();
  74.  
  75. 	 QOgreRenderWindow *orw4 = new QOgreRenderWindow(QString("View4"),mSceneMgr,mRoot,nb_cam,wi,hi); 
  76. 	  mQOgreRenderWindowList.append(orw4);
  77. 	 QHBoxLayout* Layout4 = new QHBoxLayout();
  78.     Layout4->addWidget(orw4);
  79. 	central4->setLayout(Layout4);
  80. 	////////////////////////////////////////////
  81. 	QWidget *central5 = new QGroupBox("1,1", this);
  82. 	 wi=central5->width();
  83. 	 hi=central5->height();
  84. 	// QLabel* orw5 = new QLabel("i am4",central3);
  85. 	 QOgreRenderWindow *orw5 = new QOgreRenderWindow(QString("View5"),mSceneMgr,mRoot,nb_cam,wi,hi);
  86. 	  mQOgreRenderWindowList.append(orw5);
  87. 	 QHBoxLayout* Layout5 = new QHBoxLayout();
  88.     Layout5->addWidget(orw5);
  89. 	central5->setLayout(Layout5);
  90. 	/////////////////////////////////////////
  91. 	QWidget *central6 = new QGroupBox("1,2", this);
  92. 	 wi=central6->width();
  93. 	 hi=central6->height();
  94. 	 //QLabel* orw3 = new QLabel("i am4",central3);
  95. 	 QOgreRenderWindow *orw6 = new QOgreRenderWindow(QString("View6"),mSceneMgr,mRoot,nb_cam,wi,hi);
  96. 	  mQOgreRenderWindowList.append(orw6);
  97. 	 QHBoxLayout* Layout6 = new QHBoxLayout();
  98.     Layout6->addWidget(orw6);
  99. 	central6->setLayout(Layout6);
  100. 	////////////////////////////////////////////
  101. 	QWidget *central7 = new QGroupBox("2,0", this);
  102. 	 wi=central7->width();
  103. 	 hi=central7->height();
  104. 	 //QLabel* orw = new QLabel("i am4",central7);
  105. 	  QOgreRenderWindow *orw7 = new QOgreRenderWindow(QString("View7"),mSceneMgr,mRoot,nb_cam,wi,hi); 
  106. 	   mQOgreRenderWindowList.append(orw7);
  107. 	 QHBoxLayout* Layout7 = new QHBoxLayout();
  108.     Layout7->addWidget(orw7);
  109. 	central7->setLayout(Layout7);
  110. 	////////////////////////////////////////////////////////////
  111. 	QWidget *central8 = new QGroupBox("2,1", this);
  112. 	 wi=central8->width();
  113. 	 hi=central8->height();
  114. 	// QLabel* orw3 = new QLabel("i am4",central8);
  115. 	  QOgreRenderWindow *orw8 = new QOgreRenderWindow(QString("View8"),mSceneMgr,mRoot,nb_cam,wi,hi); 
  116. 	   mQOgreRenderWindowList.append(orw8);
  117. 	 QHBoxLayout* Layout8 = new QHBoxLayout();
  118.     Layout8->addWidget(orw8);
  119. 	central8->setLayout(Layout8);
  120. 	/////////////////////////////////////////////////////////////
  121. 	QWidget *central9 = new QGroupBox("2,2", this);
  122. 	 wi=central9->width();
  123. 	 hi=central9->height();
  124. 	// QLabel* orw3 = new QLabel("i am4",central9);
  125. 	  QOgreRenderWindow *orw9 = new QOgreRenderWindow(QString("View9"),mSceneMgr,mRoot,nb_cam,wi,hi); 
  126. 	   mQOgreRenderWindowList.append(orw9);
  127. 	 QHBoxLayout* Layout9 = new QHBoxLayout();
  128.     Layout9->addWidget(orw9);
  129. 	central9->setLayout(Layout9);
  130. 	///////////////////////////////////////////////
  131. 	QWidget *central10 = new QGroupBox("3,0", this);
  132. 	 wi=central10->width();
  133. 	 hi=central10->height();
  134. 	 //QLabel* orw3 = new QLabel("i am4",central10);
  135. 	  QOgreRenderWindow *orw10 = new QOgreRenderWindow(QString("View10"),mSceneMgr,mRoot,nb_cam,wi,hi); 
  136. 	   mQOgreRenderWindowList.append(orw10);
  137. 	 QHBoxLayout* Layout10 = new QHBoxLayout();
  138.     Layout10->addWidget(orw10);
  139. 	central10->setLayout(Layout10);
  140.  
  141. 	////////////////////////////////////////////////////
  142. 	QWidget *central11 = new QGroupBox("3,1", this);
  143. 	 wi=central11->width();
  144. 	 hi=central11->height();
  145. 	// QLabel* orw3 = new QLabel("i am4",central11);
  146. 	 QOgreRenderWindow *orw11 = new QOgreRenderWindow(QString("View111"),mSceneMgr,mRoot,nb_cam,wi,hi);
  147. 	  mQOgreRenderWindowList.append(orw11);
  148. 	 QHBoxLayout* Layout11 = new QHBoxLayout();
  149.     Layout11->addWidget(orw11);
  150. 	central11->setLayout(Layout11);
  151. 	///////////////////////////////
  152. 	QWidget *central12 = new QGroupBox("3,2", this);
  153. 	 wi=central12->width();
  154. 	 hi=central12->height();
  155. 	// QLabel* orw3 = new QLabel("i am4",central11);
  156. 	  QOgreRenderWindow *orw12 = new QOgreRenderWindow(QString("View12"),mSceneMgr,mRoot,nb_cam,wi,hi);
  157. 	   mQOgreRenderWindowList.append(orw12);
  158. 	 QHBoxLayout* Layout12 = new QHBoxLayout();
  159.     Layout12->addWidget(orw12);
  160. 	central12->setLayout(Layout12);
  161. 	////////////////////////////////////////////////
  162.     rightSide->addWidget(/*new QGroupBox("0,0"), 0, 0 */central1,0,0);
  163.     rightSide->addWidget(central2,0,1); 
  164.     rightSide->addWidget(central3,0,2);
  165.     rightSide->addWidget(central4, 1, 0 );
  166.     rightSide->addWidget(central5, 1, 1 );
  167.     rightSide->addWidget(central6, 1, 2 );
  168.     rightSide->addWidget(central7, 2, 0 );
  169.     rightSide->addWidget(central8, 2, 1 );
  170.     rightSide->addWidget(central9, 2, 2 );
  171. 	rightSide->addWidget(central10, 3, 0 );
  172.     rightSide->addWidget(central11, 3, 1 );
  173.     rightSide->addWidget(central12, 3, 2 );
  174.  
  175.  
  176. 	mVerticalLayout->addWidget(central);
  177. mVerticalLayout->addLayout(rightSide);
  178.  
  179.  
  180.     }
  181.    for(int i = 0;i<mQOgreRenderWindowList.count();i++)
  182.     {
  183.         connect(mQOgreRenderWindowList[i],SIGNAL(keyPress(QKeyEvent*)),this,SLOT(keyPress(QKeyEvent*)));
  184.         connect(mQOgreRenderWindowList[i],SIGNAL(keyRelease(QKeyEvent*)),this,SLOT(keyRelease(QKeyEvent*)));
  185.        connect(mQOgreRenderWindowList[i],SIGNAL(mousePress(QMouseEvent*)),this,SLOT(mousePress(QMouseEvent*)));
  186.         connect(mQOgreRenderWindowList[i],SIGNAL(mouseRelease(QMouseEvent*)),this,SLOT(mouseRelease(QMouseEvent*)));
  187.         connect(mQOgreRenderWindowList[i],SIGNAL(mouseMove(QMouseEvent*)),this,SLOT(mouseMove(QMouseEvent*)));
  188.         connect(mQOgreRenderWindowList[i],SIGNAL(wheel(QWheelEvent*)),this,SLOT(wheel(QWheelEvent*)));
  189.     }
  190.  
  191. }
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as you know that work
Now i add this function "setCameraPosition" that work too (it add to me an object )
The question or the problem now
1-i want when i execute ""setCameraPosition"" i add than view
is it possible ?
that mean i
i want in the start of the program i see only the left view (i execute only)
Qt Code: 
  1. QOgreRenderWindow *orw = new QOgreRenderWindow(QString("View0"),mSceneMgr,mRoot,nb_cam,wi,hi);
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and in each time and when i execute "setCameraPosition" i apply
Qt Code: 
  1. QOgreRenderWindow *orw = new QOgreRenderWindow(QString("View0"),mSceneMgr,mRoot,nb_cam,wi,hi);
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and put it in the layout