private void btn_restore_Click(object sender, EventArgs e)
{
try
{
curBitmap = (Bitmap)Image.FromFile(curFileName);
//实例化类
pointbmp = new PointBitmap(curBitmap);
imageProcessing = new ImageProcessing(curBitmap);
}
catch (Exception exp)
{
MessageBox.Show(exp.Message);
}
Invalidate();
}
private void btn_open_Click(object sender, EventArgs e)
{
//创建OpenFileDialog
OpenFileDialog opnDlg = new OpenFileDialog();
//为图像选择一个筛选器
opnDlg.Filter = "所有图像文件|*.bmp;*.pcx;*.png;*.jpg;*.gif;" +
"*.tif;*.ico;*.dxf;*.cgm;*.cdr;*.wmf;*.eps;*.emf|" +
"位图(*.bmp;*.jpg;*.png;...)|*.bmp;*.pcx;*.png;*.jpg;*.gif;*.tif;*.ico|" +
"矢量图(*.wmf;*.eps;*.emf;...)|*.dxf;*.cgm;*.cdr;*.wmf;*.eps;*.emf";
//设置对话框标题
opnDlg.Title = "打开图像文件";
//启用“帮助”按钮
opnDlg.ShowHelp = true;
//如果结果为“打开”，选定文件
if (opnDlg.ShowDialog() == DialogResult.OK)
{
//读取当前选中的文件名
curFileName = opnDlg.FileName;
//使用Image.FromFile创建图像对象
try
{
//防止连续打开文件造成内存不足，每次赋值之前把上次的值清空
if (curBitmap != null)
{
curBitmap.Dispose();
}
curBitmap = (Bitmap)Image.FromFile(curFileName);
//实例化类
pointbmp = new PointBitmap(curBitmap);
imageProcessing = new ImageProcessing(curBitmap);
}
catch (Exception exp)
{
MessageBox.Show(exp.Message);
}
}
//对窗体进行重新绘制，这将强制执行paint事件处理程序
Invalidate();
}