Part	Description
object	An object expression that evaluates to a GPS ToolKit object.
Filename	A string containing the name of the input file.
TimeScale	A value from 0 to 1000 indicating how fast the file data is consumed. This parameter is optional in VB and defaults to 0.

Example

myGPSToolKit.OpenFile "C:\GPSData.txt", 1

_variant_t vtTimeScale((short)1);
_variant_t vtFilename("C:\\GPSData.txt");
m_myGPSToolKit.OpenFile(vtFilename, vtTimeScale);

Remarks

TimeScale is a "multiplier" that determines the speed at which the file GPS data is read. A value of 1 causes GPS ToolKit to "play" the file in real time, while a value of 10 tells GPS ToolKit to "play" the file 10 times faster than real time. Likewise, a value of 0.1 tells GPS ToolKit to read the file 10 times more slowly. A value of 0 indicates that GPS ToolKit should read the file as quickly as possible.
The file read may be cancelled during execution by calling the Close method.
Upon completion or cancellation of the file read, GPS ToolKit will fire the FileComplete event.

Nothing

After opening a port using OpenFile(), any subsequent call to Open() or OpenFile() will cause GPS ToolKit to throw a "Port or file is already open" exception.
If unable to find or open the specified file, GPS ToolKit will throw a "Unable to open file" exception.