using System; using System.Collections; using System.Drawing; using System.Windows.Forms; namespace Events { public class TrackbarEvents { protected byte[] channels=new byte[3] {128, 128, 128}; protected Hashtable channelMap; protected PictureBox colorPanel; public PictureBox ColorPanel { get {return colorPanel;} set {colorPanel=value;} } public TrackbarEvents() { channelMap=new Hashtable(); channelMap["R"]=0; channelMap["G"]=1; channelMap["B"]=2; } public void OnScrolled(object sender, EventArgs e) { TrackBar track=(TrackBar)sender; int idx=(int)channelMap[track.Tag]; channels[idx]=(byte)track.Value; colorPanel.BackColor = Color.FromArgb( channels[0], channels[1], channels[2]); } } }
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