LINE_CURRENTSYSTEMCHANGE
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4/8/2010
A LINE_DEVSPECIFIC message with dwMessageType set to LINE_CURRENTSYSTEMCHANGE is sent to the application every time the current system changes.
Note
You can use the function lineGetCurrentSystemType to return the same information on demand.
Syntax
#define LINE_CURRENTSYSTEMCHANGE
dwParam1 = LINE_CURRENTSYSTEMCHANGE;
dwParam2;
dwParam3;
Parameters
- dwParam1
The type of the message, in this case LINE_CURRENTSYSTEMCHANGE.
- dwParam2
The new system coverage type. See the Remarks section for a complete list of possible values.
- dwParam3
Unused.
Remarks
The following table contains details about the Line System Type constants that can be contained in the parameter dwParam2.
| Constant | Protocol | Value | Decscription |
|---|---|---|---|
LINESYSTEMTYPE_NONE |
CDMA |
0x00000000 |
No air interface standard |
LINESYSTEMTYPE_IS95A |
CDMA |
0x00000001 |
IS95A air interface standard |
LINESYSTEMTYPE_IS95B |
CDMA |
0x00000002 |
IS95B air interface standard |
LINESYSTEMTYPE_1XRTTPACKET |
CDMA |
0x00000004 |
1XRTTPACKET one-carrier radio-transmission technology |
LINESYSTEMTYPE_GSM |
GSM |
0x00000008 |
Global System for Mobile Communications (GSM) |
LINESYSTEMTYPE_GPRS |
GSM |
0x00000010 |
General Packet Radio Service (GPRS) |
Requirements
| Header | extapi.h |
| Windows Embedded CE | Windows CE 3.0 and later |
| Windows Mobile | Pocket PC 2002 and later, Smartphone 2002 and later |
See Also
Reference
Extended TAPI Messages
LINE_CURRENTLINECHANGE
lineGetCurrentSystemType