TIEAcquireParams.SetSource
Declaration
function SetSource(Api : TIEAcquireApi; Location : Variant) : boolean;
Description
Set the selected acquisition source by an API type and device. The selected device will be used for subsequent calls to
Acquire.
Result is false if the device cannot be selected (i.e. is not connected or does not exist).
The API can be one of the following:
| Value | Description |
| ieaTwain | Acquire from Twain device |
| ieaWIA | Acquire using WIA (scanners or camera) |
| ieaDCIM | Read from a connected phone, camera or device (containing a DCIM folder) using the WPD API |
Location can be one of the following:
| Value | Description |
| Default_Device | The default device for that API type will be selected |
| Index | An index of a device, e.g. 0 for the first device (ieaTwain/ieaWIA/ieaDCIM) |
| Name | The name of a device, e.g. 'CanoScan FB620' (ieaTwain/ieaWIA/ieaDCIM) |
| Path | The path of a DCIM folder, e.g. 'I:\DCIM\' (ieaDCIM) |
| Drive Letter | The letter of a connected camera card or device containing a DCIM folder, e.g. 'I' (ieaDCIM) |
See Also
◼Acquire◼SelectedSource// Acquire from the default Twain device
if ImageEnMView1.MIO.SetAcquireSource(ieaTwain, Default_Device) then
ImageEnMView1.MIO.Acquire();
// Select a Twain scanner by name
ImageEnMView1.MIO.SetAcquireSource(ieaTwain, 'CanoScan FB620');
// Select the second WIA device
ImageEnMView1.MIO.SetAcquireSource(ieaWIA, 1);
// Acquire from the camera card on H drive
if ImageEnMView1.MIO.SetAcquireSource(ieaDCIM, 'H') then
ImageEnMView1.MIO.Acquire();
// Read and restore a source
var
sDevice : string;
ADevice : TIEAcquireSource;
begin
..
// Read the selected device
sDevice := AcquireSourceToStr(ImageEnMView1.MIO.SelectedAcquireSource);
..
end;
var
sDevice : string;
ADevice : TIEAcquireSource;
begin
..
// Restore the device selection
ADevice := StrToAcquireSource(sDevice);
ImageEnMView1.MIO.SetAcquireSource(ADevice.Api, ADevice.Location);
..
end;