setOverrideCursor

setOverrideCursor is a method in Qt that is used to set a new cursor shape for a particular widget or application. This method allows you to change the default cursor for a widget or application to any of the built-in cursor shapes in Qt or to a custom cursor image.

When the setOverrideCursor method is called, the cursor shape of the widget or application is changed to the one specified in the argument. This cursor shape will remain until the restoreOverrideCursor method is called, which will restore the default cursor shape.

This method is useful when you want to provide visual feedback to the user when a particular action is being performed or when you want to indicate that a widget or application is in a particular state.

For example, you can set the cursor shape to a busy cursor (Qt::WaitCursor) when a time-consuming operation is being performed to let the user know that the application is busy and they should wait.

Syntax:

void QWidget::setOverrideCursor(const QCursor &cursor)

Parameters:

cursor - the new cursor shape to set. It can be any of the built-in cursor shapes in Qt or a custom cursor image.

Returns:

void

Example:

// set the cursor to a busy cursor QApplication::setOverrideCursor(Qt::WaitCursor);

// perform a time-consuming operation here

// restore the default cursor QApplication::restoreOverrideCursor()