// 移動拉桿時
private void trackBar1_ValueChanged(object sender, EventArgs e)
{
int value = trackBar1.Value;
// 轉成百分比
float percentage = (float)(value / 100.0);
textBox1.Text = percentage.ToString();
pcxAfter = new ImgPcx(pcxBase);
pcxAfter.Transparency(pcxOrigin, percentage);
pictureBox2.Image = pcxAfter.pcxImg;
}
// 數值變動時
private void textBox1_TextChanged(object sender, EventArgs e)
{
float value;
if (float.TryParse(textBox1.Text, out value))
{
if (value > 1)
{
textBox1.Text = "1";
value = 1;
}
else if (value < 0)
{
textBox1.Text = "0";
value = 0;
}
// 百分比轉成數值, trackBar只能用整數
trackBar1.Value = (int)(value * 100);
pcxAfter = new ImgPcx(pcxBase);
pcxAfter.Transparency(pcxOrigin, value);
pictureBox2.Image = pcxAfter.pcxImg;
}
}
