How to make QCheckBox readonly, but not grayed-out

问题

Any good way to make a checkbox readonly, but also not grayed-out (hardly visible).

I have used setEnabled(bool) which works, but the checkbox then is grayed-out and hardly readable
I can react on a toggle signal and reset the state. But I would need a kind of flag to determine if the box is read-only and then reset the check state, means I need to create my own CheckBox class.

setCheckable does not work either, it does not allow me to set a checked state at all:

    cb = this->ui->cb_RealWorld->isCheckable();
    this->ui->cb_RealWorld->setCheckable(true);
    this->ui->cb_RealWorld->setChecked(someValue);
    this->ui->cb_RealWorld->setCheckable(cb);

So the best thing I have is to use enable/disable and accept the grayed out style.

------- Edit -------

Following the stylesheet examples I was hoping I could set the style of a disabled checkbox like the one of an enabled. Failed so far to do so. More specific: Changing the icon like in the examples does not work for me, maybe because I am using Windows and the icons are not available under the path as in the examples.

PS: Related, but no answer here

Disabling a QCheckbox in a tricky way
Qt - How to disable QCheckBox while retaining checked state?

回答1:

Following the below my code:

this->ui->cb_RealWorld->setAttribute(Qt::WA_TransparentForMouseEvents);
this->ui->cb_RealWorld->setFocusPolicy(Qt::NoFocus);

回答2:

This is Devopia's solution as a function:

void SetReadOnly(QCheckBox* checkBox, bool readOnly)
{
   checkBox->setAttribute(Qt::WA_TransparentForMouseEvents, readOnly);
   checkBox->setFocusPolicy(readOnly ? Qt::NoFocus : Qt::StrongFocus);
}

回答3:

On Windows, remember to #include "windows.h" and set flags as follows:

    this->ui->cb_RealWorld->setWindowFlags(this->ui->cb_RealWorld->windowFlags() | Qt::WindowTransparentForInput);

来源：https://stackoverflow.com/questions/35190259/how-to-make-qcheckbox-readonly-but-not-grayed-out

标签

c++

qcheckbox