Alternative User Interfaces
The following properties and methods provide an opportunity to implement an alternative user interface:
- bool ShowUI - True if DS should bring up its UI
- int SourcesCount - Get count of DS
- int SourceIndex - Get or set current DS
- string GetSourceProductName(int) - Return DS name, e.g. "ScanJet Plus"
- Twain32.Identity GetSourceIdentity(int) - Return DS name, Family, Manufacturer, Version and ProtocolVersion.
- bool GetIsSourceTwain2Compatible(int) - Return true if DS support TWAIN 2.x
- void SetDefaultSource(int) - Set default DS. Only TWAIN 2.x supported
Below is an example of their use.
this._twain32.ShowUI = false;
public Form1() {
InitializeComponent();
try {
this._twain32.OpenDSM();
#region Fill DS list
this.dataSourcesToolStripComboBox.Items.Clear();
for(int i=0;i<this._twain32.SourcesCount;i++) {
this.dataSourcesToolStripComboBox.Items.Add(this._twain32.GetSourceProductName(i));
}
if(this._twain32.SourcesCount>0) {
this.dataSourcesToolStripComboBox.SelectedIndex=this._twain32.SourceIndex;
}
#endregion
} catch(Exception ex) {
MessageBox.Show(ex.Message,"SAMPLE2",MessageBoxButtons.OK,MessageBoxIcon.Error);
}
}privatevoid dataSourcesToolStripComboBox_SelectedIndexChanged(object sender,EventArgs e) {
try {
this._twain32.CloseDataSource();
this._twain32.SourceIndex=this.dataSourcesToolStripComboBox.SelectedIndex;
this._twain32.OpenDataSource();
// ...
} catch(Exception ex) {
MessageBox.Show(ex.Message,ex.GetType().Name,MessageBoxButtons.OK,MessageBoxIcon.Error);
}
}