Hi ALL
I am Srinivasan S Saripalli. I have a VC++ doubt which I have notified below. Hope you can give me a solution.
I have developed a ATL,COM 32-bit Service and in the Service I am implementing Timer functionality using either SetWaitableTimer or CreateWaitableTimer. When I compile my Service App I get the error as shown below
The ATL Win32 Service wizard generates a class mentioned below
class CServiceModule : public CComModule
{
public:
------------------------------------
------------------------------------
// here I have declared my Timer callback function to be
VOID CALLBACK TimerAPCProc(LPVOID lpArg,DWORD dwTimerLowValue,DWORD dwTimerHighValue);
HANDLE gDoneEvent;
};
In the implementation file ( *.cpp ) my code is shown below
#define _SECOND 10000000
typedef struct _MYDATA {
TCHAR *szText;
DWORD dwValue;
} MYDATA;
VOID CALLBACK CServiceModule::TimerAPCProc(
LPVOID lpArg, // Data value
DWORD dwTimerLowValue, // Timer low value
DWORD dwTimerHighValue ) // Timer high value
{
MYDATA *pMyData = (MYDATA *)lpArg;
/*_tprintf( TEXT("Message: %s\nValue: %d\n\n"), pMyData->szText,
pMyData->dwValue );
MessageBeep(0);*/
}
I have added the Timer functionality in the Run() method of the class CServiceModule
if (m_bService)
{
HANDLE hTimer;
BOOL bSuccess;
__int64 qwDueTime;
LARGE_INTEGER liDueTime;
MYDATA MyData;
MyData.szText = TEXT("This is my data");
MyData.dwValue = 100;
hTimer = CreateWaitableTimer(
NULL, // Default security attributes
FALSE, // Create auto-reset timer
TEXT("MyTimer")); // Name of waitable timer
if (hTimer != NULL)
{
// Create an integer that will be used to signal the timer
// 5 seconds from now.
qwDueTime = -5 * _SECOND;
// Copy the relative time into a LARGE_INTEGER.
liDueTime.LowPart = (DWORD) ( qwDueTime & 0xFFFFFFFF );
liDueTime.HighPart = (LONG) ( qwDueTime >> 32 );
bSuccess = SetWaitableTimer(
hTimer, // Handle to the timer object
&liDueTime, // When timer will become signaled
2000, // Periodic timer interval of 2 seconds
TimerAPCProc, // Completion routine
&MyData, // Argument to the completion routine
FALSE );
if ( bSuccess )
{
for ( ; MyData.dwValue < 1000; MyData.dwValue += 100 )
{
SleepEx(
INFINITE, // Wait forever
TRUE ); // Put thread in an alertable state
}
}
else
{
printf("SetWaitableTimer failed with error %d\n",
GetLastError());
}
CloseHandle(hTimer);
}
else
{
printf("CreateWaitableTimer failed with error %d\n",
GetLastError());
}
When I compile this application I get the error as shown below
C:\srini\adminservice\SinumerikTimerService\SinumerikTimerService.cpp(398) : error C2664: 'SetWaitableTimer' : cannot convert parameter 4 from 'void (void *,unsigned long,unsigned long)' to 'void (__stdcall *)(void *,unsigned long,unsigned long)'
None of the functions with this name in scope match the target type
Error executing cl.exe.
Searching at Google and a person tells me that I should replace CALLBACK with __stdcall but why should I do that because CALLBACK in <winbase.h> is #define CALLBACK __stdcall but still I changed CALLBACK to __stdcall and also typecasted TimerAPCProc to be (PTIMERAPCROUTINE)TimerAPCProc but still I get the same error with respect to SetWaitableTimer
I have also #defined _WIN32_WINNT macro to be 0x0500 but still the error comes.
Also I have installed WinXP SP2 Platform SDK, Visual Studio 2005.
Therefore, I have added the path "C:\PROGRAM FILES\MICROSOFT PLATFORM SDK FOR WINDOWS XP SP2\INCLUDE" in Tools--> Options --> Directories and this gives me one more error
msxml.idl
C:\PROGRAM FILES\MICROSOFT PLATFORM SDK FOR WINDOWS XP SP2\INCLUDE\msxml.idl(52) : fatal error C1083: Cannot open include file: 'xmldom.idl': No such file or directory
midl : command line error MIDL1003 : error returned by the C preprocessor (2)
Error executing midl.exe.
To resolve the above xmldom.idl error I came to know that I have to install latest platform SDK.
However If I include "C:\PROGRAM FILES\MICROSOFT VISUAL STUDIO 8\VC\PLATFORMSDK\INCLUDE" then the above xmldom.idl gets resolved and I get the below actual error
C:\srini\adminservice\SinumerikTimerService\SinumerikTimerService.cpp(398) : error C2664: 'SetWaitableTimer' : cannot convert parameter 4 from 'void (void *,unsigned long,unsigned long)' to 'void (__stdcall *)(void *,unsigned long,unsigned long)'
None of the functions with this name in scope match the target type
Error executing cl.exe.
I would be thankful to everybody who can give me a effective solution to the above problem.
Regards,
Srinivasan
