Hello everybody!
I am new to QT, probably i'm missing some basic concept, i wrote a simple demo app (windows/mingw), i am trying to change caption on push button, it works for the first time, but if i'm trying to set old value after that - it doesn't. Here are some examples:

Qt Code: 
  1. this->ui.pushButton->setText("1");
  2. this->ui.pushButton->setText("2");
  3. this->ui.pushButton->setText("3");
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this works fine, the value displayed on button is "3".

Qt Code: 
  1. this->ui.pushButton->setText("1");
  2. this->ui.pushButton->setText("2");
  3. this->ui.pushButton->setText("1");
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This example doesn't work as i expect - the displayed value on the button is "2".


similar situation with other properties, for example:

Qt Code: 
  1. this->ui.spinBox->setEnabled(true);
  2. this->ui.spinBox->setEnabled(false);
  3. this->ui.spinBox->setEnabled(true);
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the element stays in "disabled" state.

i tryed to call update() after each property change for the particular element - that didn't help.

Any suggestions? what am i missing here?
Thank you all in advance.