Why blur effect on only one widget at a time?

[nrabara]

From the docs -
Or alternatively you can apply the effect to the parent item.

I have applied blur effect ot parent widget, my parent widget contains 18 pushbuttons and 1 label.
I am able to manage blur on all the pushbuttons, but this makes pushbutton slower. ( we can differential click on pushbutton with blur applied to parent widget and without blur effect.)

I am using on Linux platform with ARM9 400Mhz CPU.

Is Graphics effect eat more CPU that degrads overall performance, or its a property of Graphics effect??

[aamer4yu]

ui->pushbutton_1->setGraphicsEffect(blur);
ui->pushbutton_2->setGraphicsEffect(blur);
ui->pushbutton_3->setGraphicsEffect(blur);
ui->pushbutton_4->setGraphicsEffect(blur);
ui->pushbutton_5->setGraphicsEffect(blur);

it will show blur effect only on last pushbutton i.e. pushbutton_5 .

now if I do,
ui->pushbutton_1->setGraphicsEffect(blur);
ui->pushbutton_4->setGraphicsEffect(blur);
ui->pushbutton_5->setGraphicsEffect(blur);
ui->pushbutton_2->setGraphicsEffect(blur);
ui->pushbutton_3->setGraphicsEffect(blur);

it will show blur effect only on pushbutton_3

From above doesnt seem you are applying effect only to parent item !

[nrabara]

Sorry I just forget to put code.

this->setGraphicsEffect(blur); // instead of ui->pushbutton_5->setGraphicsEffect(blur).

this->setGraphicsEffect(blur); // instead of ui->pushbutton_5->setGraphicsEffect(blur).

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