problem with QLineEdit and QPalette

[impeteperry]

I have defined a QLineEdit in the "BaseForm" constructor as

boxLayout = new QVBoxLayout ( frameD );
			inputStripLayout = new QHBoxLayout ( );
			boxLayout->addLayout ( inputStripLayout );
 
			lbCategory = new QLabel("Category #");
			lbCategory->setFont ( fb );
			inputStripLayout->addWidget ( lbCategory );
 
			leCategoryNumber= new QLineEdit();
			leCategoryNumber->setAlignment ( Qt::AlignCenter );
			leCategoryNumber->setPalette ( palE );
			leCategoryNumber->setFont ( fb );
			leCategoryNumber->setMaximumWidth(30);
			leCategoryNumber->setEnabled(false);
 
			inputStripLayout->addWidget ( leCategoryNumber)

boxLayout = new QVBoxLayout ( frameD );
			inputStripLayout = new QHBoxLayout ( );
			boxLayout->addLayout ( inputStripLayout );

			lbCategory = new QLabel("Category #");
			lbCategory->setFont ( fb );
			inputStripLayout->addWidget ( lbCategory );

			leCategoryNumber= new QLineEdit();
			leCategoryNumber->setAlignment ( Qt::AlignCenter );
			leCategoryNumber->setPalette ( palE );
			leCategoryNumber->setFont ( fb );
			leCategoryNumber->setMaximumWidth(30);
			leCategoryNumber->setEnabled(false);

			inputStripLayout->addWidget ( leCategoryNumber)

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and I want to change the color of the QLineEdit and set the focus with

void BaseForm::slotPb1() 
{
	catNum->inputCatNum();
	Pb1->setText("-");
	Pb2->setText("Cat'ory");
	leCategoryNumber->setPalette ( QColor (17, 255, 255) );
	leCategoryNumber->setEnabled(true);
	leCategoryNumber->setFocus();

void BaseForm::slotPb1() 
{
	catNum->inputCatNum();
	Pb1->setText("-");
	Pb2->setText("Cat'ory");
	leCategoryNumber->setPalette ( QColor (17, 255, 255) );
	leCategoryNumber->setEnabled(true);
	leCategoryNumber->setFocus();

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I get the "focus" ok, but I get a "white" box, not the "blue" one I want. Looked at the QPalette" documentation and don't understand a word of it. I am sure there is a simple way to togle colors on a QLineEdit" as a signal for "User" input. But I couldn't find it .
Thanks in advance for you help.

[marcel]

You can try sylesheets: http://doc.trolltech.com/4.4/stylesh...zing-qlineedit . It's easier.

[impeteperry]

Amazing!! "Enhancements to the point of non-usability"

But

The background of a read only QLineEdit can be modified as below:
 
 QLineEdit:read-only {
     background: lightblue;

The background of a read only QLineEdit can be modified as below:

 QLineEdit:read-only {
     background: lightblue;

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I want to change the color when it has the focus.!!!

[munna]

I think you will need to re-implement the focusInEvent and focusOutEvent of QWidget. In these methods you will have to write code to change the palette of the QLineEdit.

[pdolbey]

The stylesheet documentation http://doc.trolltech.com/4.4/stylesheet-reference.html shows you can use the "focus" state like so

QLineEdit:focus {
    background: lightblue;
}

QLineEdit:focus {
    background: lightblue;
}

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Haven't tried it (I'm still at work) but it should work

Pete