7
下面的代碼導致一堆錯誤:QPainter的不活躍
void MainWindow::displayBoard()
{
QPixmap pix(0,0);
pix.fill(Qt::white);
QPainter painter(&pix);
painter.setBrush(Qt::black);
for(int row = 0; row < 8; row++)
for(int col = 0; col < 8; col++)
painter.drawRect(row * 10, col * 10, 10, 10);
ui->label->setPixmap(pix);
}
的錯誤:
QPainter::begin: Paint device returned engine == 0, type: 2
QPainter::setBrush: Painter not active
QPainter::drawRects: Painter not active
我怎樣才能解決這個問題?
問題可能是你的像素大小爲0x0 – Colin 2010-12-03 01:50:28