Switched to using waitable timers instead of Sleep(), gives more accurate time cycles...

[reactos.git] / rosapps / notevil / notevil.c

diff --git a/rosapps/notevil/notevil.c b/rosapps/notevil/notevil.c
index da4eaaf..509dd96 100644 (file)
--- a/rosapps/notevil/notevil.c
+++ b/rosapps/notevil/notevil.c
@@ -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
  * 
@@ -37,6 +37,7 @@ LPCTSTR app_name = _TEXT("notevil");
 HANDLE myself;
 HANDLE ScreenBuffer;
 CONSOLE_SCREEN_BUFFER_INFO ScreenBufferInfo;
+HANDLE WaitableTimer;
 
 void
 WriteStringAt(
@@ -50,13 +51,14 @@ WriteStringAt(
 
        if (0 == wLen)
                return;
-       WriteConsoleOutputCharacter(
-               ScreenBuffer,
-               lpString,
-               wLen,
-               xy,
-               & cWritten
-               );
+       // don't bother writing text when erasing
+       if( wColor )
+         WriteConsoleOutputCharacter( ScreenBuffer,
+                                      lpString,
+                                      wLen,
+                                      xy,
+                                      & cWritten
+                                      );
        FillConsoleOutputAttribute(
                ScreenBuffer,
                wColor,
@@ -194,7 +196,7 @@ MainLoop(void)
                        xy,
                        wColor
                        );
-               Sleep(100);
+               WaitForSingleObject( WaitableTimer, INFINITE );
                WriteStringAt(
                        NameString,
                        xy,
@@ -210,8 +212,10 @@ main(
        char    *argv []
        )
 {
-        DWORD Written;
+        LARGE_INTEGER lint;
+       DWORD Written;
        COORD Coord = { 0, 0 };
+       
        myself = GetModuleHandle(NULL);
 
        GetConsoleScreenBufferInfo (GetStdHandle(STD_OUTPUT_HANDLE),
@@ -240,6 +244,19 @@ main(
                                    ScreenBufferInfo.dwSize.X * ScreenBufferInfo.dwSize.Y,
                                    Coord,
                                    &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);
        MainLoop();
        CloseHandle(ScreenBuffer);