Hi all,
I'm really new of QT programming and I need to acess my ui pointer from a thread to refresh an image that's displayed in my window.
How can i do this? Many thanks to everyone who will help me
Gian

I post some code to explain it better:

MainWindow.h:
Qt Code: 
  1. #ifndef MAINWINDOW_H
  2. #define MAINWINDOW_H
  3.  
  4. #include <QtGui/QMainWindow>
  5.  
  6. namespace Ui
  7. {
  8.     class MainWindow;
  9. }
  10.  
  11. class MainWindow : public QMainWindow
  12. {
  13.     Q_OBJECT
  14.  
  15. public:
  16.     MainWindow(QWidget *parent = 0);
  17.     ~MainWindow();
  18.  
  19. private:
  20.     Ui::MainWindow *ui;
  21. };
  22.  
  23. #endif // MAINWINDOW_H
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MainWindow.cpp:
Qt Code: 
  1. MainWindow::MainWindow(QWidget *parent)
  2.     : QMainWindow(parent), ui(new Ui::MainWindow)
  3. {
  4.     ui->setupUi(this);
  5. 	MyThread* myT = new MyThread();
  6. 	myT->run();
  7. }
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getFrameThread.cpp:
Qt Code: 
  1. void MyThread::run() 
  2.     {
  3. 		forever {
  4. 			//MainWindow *ui = MainWindow::ui;
  5. 			CvCapture* camera;
  6. 			camera = cvCreateCameraCapture(0);
  7. 			assert(camera);
  8. 			IplImage * cvimage=cvQueryFrame(camera);
  9. 			assert(cvimage);
  10.                         // IMG ELABORATION SKIPPED
  11. 			MainWindow::ui->imgLabel->setPixmap(CVUtils::getImage(cvimage)); // This is the row i want to fix
  12. 		}
  13.     }
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getFrameThread.h:
Qt Code: 
  1. #include "CVUtils.h"
  2. #include <QThread>
  3.  
  4. class MyThread : public QThread
  5.     {
  6.         Q_OBJECT
  7. 	public:
  8. 		MyThread();
  9.  
  10.     public:
  11.         void run();
  12. 		MainWindow* ui;
  13.     };
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