OpenGL question Keyboard code

[Frank Brübach]

Hi Charles

I would Like to know what is "lastkey" in the OpenGL Keyboardcode example ? Its more a function? A usual variable it cant be possible... If I Change lastkey to lastkey2 example doesn't Work anymore


See my Code below

Code Select Expand


  $ FileName  "t.exe"
  'uses    RTL64
  '
  int width   =  640
  int height  =  160
  string title  =  "Key codes2"
  $ fontA =  "Arial",FW_SEMIBOLD

sys bu,ert '*
string ers
string cr=chr(13,10)

  macro keydown
  case 27 : 'no action
  case 32 : 'no action
  end macro
  '
 
function guistate() as sys 
      return @bu
    end function
    'undef bu 'end bu scope

sys b = guistate()
  if ert
    print ers cr ert
  endif
 
  bind b
    sys     hWndMain,hInst,inst,hDC,hRC
    int     pixelform
    int     mposx,mposy
    int     sposx,sposy
    int     eposx,eposy
    int     iposx,iposy
    int     mmove,bleft,bmid,bright,bwheel
    int     pause
    int     bkey,keyd,lastkey2,lastchar2
    int     running
    int     key[256]
  end bind

  uses OpenglSceneFrame
  indexbase 1 

  sub initialize(sys hWnd)
  ========================
  end sub

  sub Release(sys hwnd)
  =====================
  end sub

  sub scene(sys hWnd)
  '==================
  DozyFrame 
  glClearColor 0.5, 0.5, 0.7, 0
  glPushMatrix
  gltranslatef  -1.5,0.,-1.0
  glscalef      .25,.3,.01
  glColor3f     .99,.99,.00
  gprint        "Last key pressed: "
  glColor3f     .99,.99,.99

  int lastkey2 '=lastkey ' doesnt go
  'int lastkey2=lastkey ' go

  if lastkey2
    gprint lastkey2 " = 0x" hex(lastkey2)
  else
    gprint "(none)"
  end if
  glPopMatrix
  end sub

Thanks, Frank

[Charles Pegge]

Hi Frank, Lastkey is a global variable set by WM_KEYDOWN in winutil.inc

[Frank Brübach]

Good morning Charles and thank you for Infos

But I am Thinking thats Not all and more complicated as I noticed with mousemessages keyboardmessages functions and so on.. I was often wondering what this lastkey / lastchar command or variable  is doing in consoleG . I am Sure its Not easy to program all this Things  but its looking in this example for example so easy   Compliments for your OpenGL headers and Features thats a great Job you did

Nice thursday spring will come soon in Germany

[Charles Pegge]

Hi frank,

This demonstrates keyboard and mouse states you can use:

Code Select Expand


  $ FileName  "t.exe"
  'uses    RTL64
  '
  % Title "Keyboard and Mouse Variables"
  % NoEscape

  uses consoleG
 
BeginScript

  procedure main()
  ================
  cls 0.5,0.5,0.7
  color 1,1,1
  scale 2
  move 2,-1
  pushstate
  print "LastKey  " lastkey " = 0x" hex(lastkey)
  popstate
  move 0,-1
  pushstate
  print "LastChar  " lastchar " = 0x" hex(lastchar)
  popstate
  move 0,-1
  pushstate
  print "keystate(Shift) / keystate(Control)  " KeyState(VK_SHIFT)>>15 " / " KeyState(VK_CONTROL)>>15
  popstate
  move 0,-2
  pushstate
  print "sposx,sposy  " sposx ", " sposy
  popstate
  move 0,-1
  pushstate
  print "mposx,mposy  " mposx ", " mposy
  popstate
  move 0,-1
  pushstate
  print "bleft,bmid,bright  " bleft ", " bmid ", " bright
  popstate
  move 0,-1
  pushstate
  print "bwheel  " bwheel
  popstate
  move 0,-1
  end procedure

EndScript

Our German Monarch

[Frank Brübach]

Thank you Charles a good consoleG OpenGL example I Like IT

Btw Last Summer we bet with Friends that Charles wont be King for one year