| #Include "windows.bi"
#Include "GL/glu.bi"
Sub RenderScene
  Static rtri As Single
  glClear GL_COLOR_BUFFER_BIT Or GL_DEPTH_BUFFER_BIT
  glPushMatrix
  glLoadIdentity
  glTranslatef 0.0, 0.0, -4.0
  glRotatef rtri, 0, 1, 0
  glBegin GL_TRIANGLES
  glColor3f   1.0, 0.0, 0.0                        'Red
  glVertex3f  0.0, 1.0, 0.0                        'Top Of Triangle  Front)
  glColor3f   0.0, 1.0, 0.0                        'Green
  glVertex3f -1.0,-1.0, 1.0                        'Left Of Triangle  Front)
  glColor3f   0.0, 0.0, 1.0                        'Blue
  glVertex3f  1.0,-1.0, 1.0                        'Right Of Triangle  Front)
  glColor3f   1.0, 0.0, 0.0                        'Red
  glVertex3f  0.0, 1.0, 0.0                        'Top Of Triangle  Right)
  glColor3f   0.0, 0.0, 1.0                        'Blue
  glVertex3f  1.0,-1.0, 1.0                        'Left Of Triangle  Right)
  glColor3f   0.0, 1.0, 0.0                        'Green
  glVertex3f  1.0,-1.0,-1.0                        'Right Of Triangle  Right)
  glColor3f   1.0, 0.0, 0.0                        'Red
  glVertex3f  0.0, 1.0, 0.0                        'Top Of Triangle  Back)
  glColor3f   0.0, 1.0, 0.0                        'Green
  glVertex3f  1.0,-1.0,-1.0                        'Left Of Triangle  Back)
  glColor3f   0.0, 0.0, 1.0                        'Blue
  glVertex3f -1.0,-1.0,-1.0                        'Right Of Triangle  Back)
  glColor3f   1.0, 0.0, 0.0                        'Red
  glVertex3f  0.0, 1.0, 0.0                        'Top Of Triangle  Left)
  glColor3f   0.0, 0.0, 1.0                        'Blue
  glVertex3f -1.0,-1.0,-1.0                        'Left Of Triangle  Left)
  glColor3f   0.0, 1.0, 0.0                        'Green
  glVertex3f -1.0,-1.0, 1.0                        'Right Of Triangle  Left)
  glEnd
  glPopMatrix
  rtri = rtri + 2.0
  Flip
End Sub
ScreenRes 640, 480, 32,,2 'OpenGL-Modus
Dim As HWND hwnd
ScreenControl(2 ,Cast(Integer, hwnd)) 'GET_WINDOW_HANDLE
'http://msdn.microsoft.com/de-de/library/bb979284.aspx
SetWindowLong hwnd, GWL_STYLE, WS_POPUP Or WS_VISIBLE 'geränderten Fensterstil setzen
SetWindowLong hwnd, GWL_EXSTYLE, WS_EX_LAYERED 'erweiterter Fensterstil setzen
SetLayeredWindowAttributes(hwnd, 0, 0, LWA_COLORKEY)'Transparenzinformationen zuweisen
glViewport 0, 0, 640, 480                      ' Reset The Current Viewport
glMatrixMode GL_PROJECTION                     ' Select The Projection Matrix
glLoadIdentity                                 ' Reset The Projection Matrix
gluPerspective 45.0, 640.0/480.0, 0.1, 100.0   ' Calculate The Aspect Ratio Of The Window
glMatrixMode GL_MODELVIEW                      ' Select The Modelview Matrix
glLoadIdentity                                 ' Reset The Modelview Matrix
'glEnable GL_ALPHA_TEST
glEnable GL_DEPTH_TEST
'Transparent-OpenGL-window
'glEnable GL_BLEND
'glBlendFunc GL_SRC_ALPHA, GL_ONE_MINUS_SRC_ALPHA
glClearColor 0, 0, 0, 0
Do
  RenderScene
  Sleep 1
Loop While InKey = "" |