Hello,

The goal of my class MyDialog is to display dynamically 2 or 10 checkboxes using a gridlayout. If the number of checkboxes changes, first
I empty the gridlayout (function clearLayout) and then I insert the desired number of checkboxes.

Unfortunately an annoying warning is displayed (I use qt 5.7 on windows) after the call of adjustSize():
setGeometry: Unable to set geometry 22x22+2481+481 on QWidgetWindow/'MyDialogClassWindow'. Resulting geometry: 95x22+2481+481 (frame: 8, 30, 8, 8, custom margin: 0, 0, 0, 0, minimum size: 22x22, maximum size: 16777215x16777215).
Do you understand why there is such a warning ?
Thank you


Qt Code: 
  1. #include "mydialog.h"
  2.  
  3. MyDialog::MyDialog()
  5. {
  6.     _value = 2;
  7.     _layout = new QGridLayout;
  8.     setLayout(_layout);
  9.     createDisplay();
  10. }
  11.  
  12. MyDialog::~MyDialog(){}
  13.  
  14. // remove all the widgets of layout
  15. void MyDialog::clearLayout(QLayout* layout)
  16. {
  17.     if(!layout) return;
  18.     while (QLayoutItem* item = layout->takeAt(0))
  19.     {
  20.         if (QWidget* widget = item->widget()){
  21.             widget->deleteLater();
  22.         }
  23.  
  24.         if (QLayout* childLayout = item->layout())
  25.             clearLayout(childLayout);
  26.         delete item;
  27.     }
  28. }
  29.  
  30. void MyDialog::createDisplay()
  31. {
  32.     clearLayout(layout());
  33.  
  34.     _comboBoxType = new QComboBox();
  35.     _comboBoxType->addItem("2", 2);
  36.     _comboBoxType->addItem("10", 10);
  37.     if(_value == 2)
  38.     {
  39.         _comboBoxType->setCurrentIndex(0);
  40.     }else
  41.     {
  42.         _comboBoxType->setCurrentIndex(1);
  43.     }
  44.     _layout->addWidget(_comboBoxType, 0, 0);
  45.     connect(_comboBoxType, SIGNAL(currentIndexChanged(int)), this, SLOT(setValue()));
  46.  
  47.     for(int i=0; i<_value; ++i)
  48.     {
  49.         QCheckBox *w = new QCheckBox("Value :", this);
  50.         _layout->addWidget(w, i+1, 0);
  51.     }
  52.     adjustSize();
  53. }
  54.  
  55. void MyDialog::setValue()
  56. {
  57.     _value = _comboBoxType->currentData().toInt();
  58.     createDisplay();
  59. }
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mydialog.cpp
mydialog.h