settings.setValue("ShowCrosshairs", ui.cbShowCrosshairs->isChecked());
settings.setValue("ScaleGrid", ui.cbScaleGrid->isChecked());
settings.setValue("MinGridSpacing", ui.cbMinGridSpacing->currentText());
settings.setValue("ShowCrosshairs", ui.cbShowCrosshairs->isChecked());
settings.setValue("ScaleGrid", ui.cbScaleGrid->isChecked());
settings.setValue("MinGridSpacing", ui.cbMinGridSpacing->currentText());