Hi folks. I am trying to get a c++ timer to work in the sort of resolution of around 10 ms. AT the moment I am using a test loop with int time = 40; for(i=0; i < 30; i++) { a = a+1; Sleep(time); } The basic theory was to sample a every '40' ms. However I am trying with the following code to give a smilar thing. #include <stdio.h> #include <windows.h> #include <mmsystem.h> #include <iostream.h> void main (void) { TIMECAPS resolution; DWORD start, finish, duration, i; if (timeGetDevCaps (&resolution, sizeof (TIMECAPS)) == TIMERR_NOERROR) { printf ("Minimum supported resolution = %d\n", resolution.wPeriodMin); printf ("Maximum supported resolution = %d\n", resolution.wPeriodMax); } if (resolution.wPeriodMin <= 1) { if (timeBeginPeriod (1) == TIMERR_NOERROR) { for (i = 1; i <= 20; i++) { start = timeGetTime (); while (timeGetTime () < (start + i)); finish = timeGetTime (); printf ("start:%d finish:%ld\n", start, finish); duration = finish - start; printf ("expected:%d actual:%ld\n", i, duration); } timeEndPeriod (1); } } } except I get a lot of undeclared errors for some reason. I cannot figure out what is causing this. I would appreciate any help. Thanks Elhan

Elhan: You're mixing up the Windows API interface with the C++ console application interface. MYXP

use this as a timer (20000 = about 1 second depending on your processor speed): int main(){ //stuff int time = 10000; while (time != 0){ cout <<"_\r"; //you must have something for the computer to //to take up time wasted otherwise there will //no no noticable delay. This outputs an _ //nad erases it immeaditely with \r. time--; } //other stuff } hope this works! Jake