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Switched to using waitable timers instead of Sleep(), gives more accurate time cycles, also added some small optimizations

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svn path=/trunk/; revision=1629
This commit is contained in:
Phillip Susi 2001-02-18 19:31:38 +00:00
parent 349ae0c799
commit 3d4886b292
1 changed files with 27 additions and 10 deletions
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25
rosapps/notevil/notevil.c
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@ -1,4 +1,4 @@
/* $Id: notevil.c,v 1.4 2001/01/31 03:03:20 phreak Exp $ /* $Id: notevil.c,v 1.5 2001/02/18 19:31:38 phreak Exp $
* *
* notevil.c * notevil.c
* *
@ -37,6 +37,7 @@ LPCTSTR app_name = _TEXT("notevil");
HANDLE myself; HANDLE myself;
HANDLE ScreenBuffer; HANDLE ScreenBuffer;
CONSOLE_SCREEN_BUFFER_INFO ScreenBufferInfo; CONSOLE_SCREEN_BUFFER_INFO ScreenBufferInfo;
HANDLE WaitableTimer;
void void
WriteStringAt( WriteStringAt(
@ -50,8 +51,9 @@ WriteStringAt(
if (0 == wLen) if (0 == wLen)
return; return;
WriteConsoleOutputCharacter( // don't bother writing text when erasing
ScreenBuffer, if( wColor )
WriteConsoleOutputCharacter( ScreenBuffer,
lpString, lpString,
wLen, wLen,
xy, xy,
@ -194,7 +196,7 @@ MainLoop(void)
xy, xy,
wColor wColor
); );
Sleep(100); WaitForSingleObject( WaitableTimer, INFINITE );
WriteStringAt( WriteStringAt(
NameString, NameString,
xy, xy,
@ -210,8 +212,10 @@ main(
char *argv [] char *argv []
) )
{ {
LARGE_INTEGER lint;
DWORD Written; DWORD Written;
COORD Coord = { 0, 0 }; COORD Coord = { 0, 0 };
myself = GetModuleHandle(NULL); myself = GetModuleHandle(NULL);
GetConsoleScreenBufferInfo (GetStdHandle(STD_OUTPUT_HANDLE), GetConsoleScreenBufferInfo (GetStdHandle(STD_OUTPUT_HANDLE),
@ -240,6 +244,19 @@ main(
ScreenBufferInfo.dwSize.X * ScreenBufferInfo.dwSize.Y, ScreenBufferInfo.dwSize.X * ScreenBufferInfo.dwSize.Y,
Coord, Coord,
&Written ); &Written );
WaitableTimer = CreateWaitableTimer( NULL, FALSE, NULL );
if( WaitableTimer == INVALID_HANDLE_VALUE )
{
printf( "CreateWaitabletimer() failed\n" );
return 1;
}
lint.QuadPart = -2000000;
if( SetWaitableTimer( WaitableTimer, &lint, 200, NULL, NULL, FALSE ) == FALSE )
{
printf( "SetWaitableTimer() failed: %x\n", GetLastError() );
return 2;
}
SetConsoleActiveScreenBuffer(ScreenBuffer); SetConsoleActiveScreenBuffer(ScreenBuffer);
MainLoop(); MainLoop();
CloseHandle(ScreenBuffer); CloseHandle(ScreenBuffer);