画图程序不保存编辑过的图片

本文关键字：编辑 保存 程序 | 更新日期: 2023-09-27 18:10:32

我正在用c#， VS2010开发一个绘图应用程序

启动界面为空白pictureBox，我为画笔工具油漆做了mouseDown和mouseMove事件处理程序它运行良好

当我尝试保存新图片时(在空白pictureBox上绘制后)我输入文件，它只是一张空白图片。

问题是代码没有保存效果。

为什么?

mouseDown事件处理程序 

private void mouseDown(object sender, MouseEventArgs e)
    {
        if (CurrentFunction == "DrawFree")
        {
            if (e.Button == MouseButtons.Left)
                ReleaseFlag = true;
            StartPoint = e.Location;
        }
    }

mouseMove事件处理程序

 private void mouseMove(object sender, MouseEventArgs e)
    {
        if (CurrentFunction == "DrawFree")
        {
            if (ReleaseFlag)
            {
                EndPoint = e.Location;
                g = pictureBox1.CreateGraphics();
                g.DrawLine(p, StartPoint, EndPoint);
            }
            StartPoint = EndPoint;
        }
    }
<<p> 保存代码/strong> 
 private void savePhotoToolStripMenuItem_Click(object sender, EventArgs e)
    {
        using (Bitmap bmp = new Bitmap(pictureBox1.ClientSize.Width,
                            pictureBox1.ClientSize.Height))
        {
            using (Graphics g = Graphics.FromImage(bmp))
            {
                Image yourImage = pictureBox1.Image;
                Bitmap yourBitmap = new Bitmap(yourImage);
                g.DrawImage(yourBitmap,
                            new Rectangle(0, 0, bmp.Width, bmp.Height),
                            new Rectangle(0, 0, yourImage.Width, yourImage.Height),
                            GraphicsUnit.Pixel);
            }
            bmp.Save(@"d:'yourfile.png", ImageFormat.Png);
        }
    }

画图程序不保存编辑过的图片

既然您的bitmap "yourBitmap"与您的图像，尝试替换bmp。保存您的位图。保存

    yourBitmap.Image.Save(@"d:'yourfile.png", ImageFormat.Png);
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