上海网站建设网络推广/网站建设方案范文

web/2025/4/1 3:35:15/文章来源:https://blog.csdn.net/yueni_zhao/article/details/146549683

上海网站建设网络推广,网站建设方案范文,科技部政服务服平台,移民网站用什么系统做网站好分辨率：24X24 最大圆代码: #include <QApplication> #include <QImage> #include <QPainter>int main(int argc, char *argv[]) {QImage image(QSize(24,24),QImage::Format_ARGB32);image.fill(QColor(0,0,0,0));QPainter paint(&image);…

分辨率：24X24

最大圆

代码:

#include <QApplication>
#include <QImage>
#include <QPainter>int main(int argc, char *argv[])
{QImage image(QSize(24,24),QImage::Format_ARGB32);image.fill(QColor(0,0,0,0));QPainter paint(&image);QRectF rect = image.rect();paint.setPen(QColor(255,255,255,0));paint.setBrush(QColor(255,255,255,255));paint.drawEllipse(rect);image.save("sun.png");return 0;
}

效果：

半径减一半

#include <QApplication>
#include <QImage>
#include <QPainter>
#include <QRect>
int main()
{QImage image(QSize(24,24),QImage::Format_ARGB32);image.fill(QColor(0,0,0,0));QPainter paint(&image);QRectF rect = image.rect();paint.setPen(QColor(255,255,255,0));paint.setBrush(QColor(255,255,255,255));// paint.drawEllipse(rect);paint.drawEllipse(rect.center().toPoint(),6,6);image.save("sun.png");return 0;
}