Argox PT-9130 - Manual (Page 46)

PT-90 Mobile Computer SDK Programming Manual 39
RegisterTriggerKeyNotification
To Register the application to SYSAPIAX.dll, so that SYSAPIAX.dll will send a window message to the application when the
trigger Key is pressed or released
DWORD RegisterTriggerKeyNotification
{
HANDLE hWnd ,
UINT uMsg
}
Parameters
hWnd
[in] The handling window of the application to receive the message.
uMsg
[in] The message value to be sent when trigger Key is pressed or released
Returned Values
Return 0 if the operation is successful, otherwise return 1.
Remarks
The application should call UnregisterTriggerKeyNotification function to unregister the prompt message from the
dll. The wParam parameter of window message return the status of trigger key.
wParam Trigger Key
0 The trigger key is released.
1 The trigger key is pressed.
Example
if(RegisterTriggerKeyNotification(this->m_hWnd,WM_USER+0x0001))
AfxMessageBox(_T("RegisterTriggerKeyNotification FAIL!!"));
Requirements
OS Versions: Windows CE 6.0 or beyond.
Header: sysapiax.h
Link Library: sysapiax.lib
Link DLL: sysapiax.dll
Device: PT90