I have a freeflow layout inside a scrollarea that when new labels get added to that freeflow layout the scrollarea does not work. The scrollbar never changes even if I resize the form.

Here is some code

Qt Code: 
  1. #include <QtGui>
  2.  
  3. #include "flowlayout.h"
  4. #include "window.h"
  5. #include "dropsitewidget.h"
  6.  
  7. Window::Window()
  8. {
  9.  
  10. 	// setting up the debig textbox
  11. 	this->log = new QTextEdit;
  12.  
  13.  
  14. 	// setting up the flow layout
  15. 	this->flowLayout = new FlowLayout;
  16. 	this->flowLayout->setSizeConstraint(QLayout::SetMinimumSize);
  17.  
  18. 	QScrollArea *scrollArea = new QScrollArea;
  19. 	scrollArea->setLayout(this->flowLayout);
  20.  
  21. 	// adding the 20 labels for images
  22. 	for (int i=0; i<20; i++) {
  23. 		//this->flowLayout->addWidget(new QLabel(tr("its a label")));
  24.  
  25. 		QLabel *label = new QLabel("image here");
  26. 		label->setFixedSize(100,100);
  27.  
  28. 		this->labelList.append(label);
  29. 		this->flowLayout->addWidget(this->labelList.at(i));
  30. 	}
  31.  
  32. 	// adding the widget to do the drag and drop
  33. 	dropSiteWidget = new DropSiteWidget;
  34. 	connect(dropSiteWidget, SIGNAL(sendLog(QString)), log, SLOT(append(QString)));
  35. 	connect(dropSiteWidget, SIGNAL(sendImage(QString)), this, SLOT(newImage(QString)));
  36.  
  37.  
  38.  
  39. 	QVBoxLayout *layout = new QVBoxLayout;
  40. 	layout->addWidget(dropSiteWidget);
  41. 	layout->addWidget(scrollArea);
  42. 	layout->addWidget(log);
  43. 	setLayout(layout);
  44.  
  45. 	this->count = 0;
  46.  
  47. 	setWindowTitle(tr("Flow Layout"));
  48. }
  49.  
  50. void Window::newImage(QString str) {
  51.     // loading the new image
  52.     QPixmap *img = new QPixmap(str);
  53.  
  54.     // checking if its a valid image
  55.     if (!img->isNull()) {
  56.         // scaling the image now
  57.         QPixmap smallImg;
  58.         smallImg = img->scaledToWidth(100);
  59.  
  60.         this->labelList.at(this->count)->setPixmap(smallImg);
  61.         this->count++;
  62.     }
  63. }
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freeflow and dragdropwidget are taken from the examples