How to use timeSetEvent in C++/CLI

attias gabi

I want to use the timeSetEvent in the C++/CLI for a 1msec timing resolution. I seem to have a problem in the CALLBACK function and when i try to replace it with a delegate i have other problems. Can anyone show me the way to use timeSetEvent with a CALLBACK/Delegate function that actually work?

guestcat

SampleForm::SampleForm() { InitForm(); } void SampleForm::InitForm() { Timer* timer1; timer1 = new Timer(); timer1->Interval = 3000; // 3 seconds resolution timer1->add_Tick(new EventHandler(this,OnTimer)); timer1->Start(); } void SampleForm::OnTimer(System::Object* obj,System::EventArgs* ea) //declare as static method in .h file { } ^-^ @|@ - redCat

attias gabi

this is now the timeSetEvent, but the Timer class. The Timer class accuracy is very poor, unlike the timeSetEvent. Can anybody show me how to use it in c++/cli .net 2005?

oshah

First of all, you should note that accuracy is not the same as precision[^]. 10ms is pretty much the most accurate you can get with Win32, without screwing with the operating system metrics or reinstalling the HAL. But anyway, you use timeSetEvent in C++/CLI the same way you use it in Win32.

#include #pragma comment(lib, "winmm")

public ref class TimerWrapper
{
EventHandle ^eventHandle;
public:
TimerWrapper()
: eventHandle(false, EventResetMode::AutoReset)
{
}

int TimerFunc()
{
for( ; ; )
{
eventHandle->WaitOne();
...
}
}

void UseTimeEvent()
{
timeSetEvent(100, 55, reinterpret_cast(
eventHandle->SafeWaitHandle->DangerousWaitHandle().ToPointer()),
0, TIME_ONESHOT | TIME_CALLBACK_EVENT_SET);
...
}
};

-- modified at 17:31 Saturday 13th May, 2006