private void PictureBox1_MouseUp(object sender, MouseEventArgs e)
{
Point end = Cursor.Position; // スクリーン座標で移動量を調べる
Point delta = new Point(start.X - end.X, start.Y - end.Y);
switch (status)
{
case opemode.移動:
pictureBox1.Location = new Point(pictureBox1.Location.X - delta.X, pictureBox1.Location.Y - delta.Y);
break;
case opemode.縮小:
if (currentscale > 0.3)
{
currentscale -= 0.03;
}
pictureBox1.Image = ResizeImage(originalimg, currentscale);
break;
case opemode.拡大:
if (currentscale < 5)
{
currentscale += 0.03;
}
pictureBox1.Image = ResizeImage(originalimg, currentscale);
break;
}
status = opemode.NOP;
}
private void PictureBox1_MouseDown(object sender, MouseEventArgs e)
{
status = opemode.移動;
start = Cursor.Position; // スクリーン座標で移動量を調べる
if ((Control.ModifierKeys & Keys.Shift) == Keys.Shift)
{
status = opemode.縮小;
}
if ((Control.ModifierKeys & Keys.Control) == Keys.Control)
{
status = opemode.拡大;
}
}
