Console mode window resizing

[waltp9999]

I'm trying to resize a console window and can't find the appropriate calls. SetConsoleScreenBufferSize() will allow the window to grow larger but not smaller. SetConsoleWindowInfo() simply returns error 6 (invalid handle).

All other calls I find deal with pixels but in order to use these calls, I need the current font Size, but can't find that call either.

Any idea where I can look next?

Thanks
Walt

 

[JIA3EP]

I think this algorithm should help (width and height are wanted sizes):

  CONSOLE_SCREEN_BUFFER_INFO csbi;
  COORD coordScreen;
  HANDLE Screen;
  BOOL bSuccess;
  SMALL_RECT srWindowRect;

  Screen = GetStdHandle(STD_OUTPUT_HANDLE);
  ASSERT((Screen != INVALID_HANDLE_VALUE));

  bSuccess = GetConsoleScreenBufferInfo(Screen, &csbi);
  ASSERT(bSuccess);

  /* get the largest size we can size the console window to */
  coordScreen = GetLargestConsoleWindowSize(Screen);
  ASSERT(coordScreen.X | coordScreen.Y);

  /* set window size to 1,1 in order to set any buffer size */
  srWindowRect.Left = srWindowRect.Top = (SHORT) 0;
  srWindowRect.Right = srWindowRect.Bottom = (SHORT) 1;
  bSuccess = SetConsoleWindowInfo(Screen, TRUE, &srWindowRect);
  ASSERT(bSuccess);

  /* define the new console window size and scroll position */
  srWindowRect.Right = (SHORT) (min(width, coordScreen.X) - 1);
  srWindowRect.Bottom = (SHORT) (min(height, coordScreen.Y) - 1);  

  /* define the new console buffer size */
  coordScreen.X = width;
  coordScreen.Y = height;

  bSuccess = SetConsoleScreenBufferSize(Screen, coordScreen);
  ASSERT(bSuccess);
  bSuccess = SetConsoleWindowInfo(Screen, TRUE, &srWindowRect);
  ASSERT(bSuccess);