Rewrote and refactored creation of dummy window and OpenGL context on

Windows to be encapsulated in WindowsDummyGLDrawable class. This is a
prerequisite for implementing top-level pbuffer support in the
GLDrawableFactory (i.e., not associated with a GLCanvas). Refactored
context implementations further on all platforms.


git-svn-id: file:///usr/local/projects/SUN/JOGL/git-svn/svn-server-sync/jogl/branches/JSR-231@325 232f8b59-042b-4e1e-8c03-345bb8c30851

1 files changed, 13 insertions, 64 deletions

diff --git a/make/wgl-CustomCCode.c b/make/wgl-CustomCCode.c
index be233fd9a..0fe9ee628 100755
--- a/make/wgl-CustomCCode.c
+++ b/make/wgl-CustomCCode.c
@@ -1,37 +1,25 @@
 #include <stdio.h>
 
-LRESULT	CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
+#define JOGL_DUMMY_WINDOW_NAME "__jogl_dummy_window"
+
+LRESULT CALLBACK DummyWndProc( HWND   hWnd, UINT   uMsg, WPARAM wParam, LPARAM lParam) {
+  return DefWindowProc(hWnd,uMsg,wParam,lParam);
+}
+
 ATOM oglClass = 0;
 
 HWND CreateDummyWindow( int x, int y, int width, int height ) {
-  RECT rect;
   HINSTANCE hInstance;
   DWORD     dwExStyle;
   DWORD     dwStyle;
   HWND      hWnd;
-  ZeroMemory( &rect, sizeof( rect ) );
-  // I don't know if we need this but it can't hurt
-  if( width < 0 ) {
-    rect.left = x + width;
-    rect.right = x;
-  } else {
-    rect.left = x;
-    rect.right = x + width;
-  }
-  if( height < 0 ) {
-    rect.top = y + height;
-    rect.bottom = y;
-  } else {
-    rect.top = y;
-    rect.bottom = y + height;
-  }
+
   hInstance = GetModuleHandle(NULL);
-  
   if( !oglClass ) {
     WNDCLASS  wc;
     ZeroMemory( &wc, sizeof( wc ) );
     wc.style = CS_HREDRAW | CS_VREDRAW | CS_OWNDC;
-    wc.lpfnWndProc = (WNDPROC) WndProc;
+    wc.lpfnWndProc = (WNDPROC) DummyWndProc;
     wc.cbClsExtra = 0;
     wc.cbWndExtra = 0;
     wc.hInstance = hInstance;
@@ -39,7 +27,7 @@ HWND CreateDummyWindow( int x, int y, int width, int height ) {
     wc.hCursor = NULL;
     wc.hbrBackground = NULL;
     wc.lpszMenuName = NULL;
-    wc.lpszClassName	= "OpenGL";
+    wc.lpszClassName = JOGL_DUMMY_WINDOW_NAME;
     if( !(oglClass = RegisterClass( &wc )) ) {
       printf( "RegisterClass Failed: %d\n", GetLastError() );
       return( 0 );
@@ -48,52 +36,13 @@ HWND CreateDummyWindow( int x, int y, int width, int height ) {
   
   dwExStyle = WS_EX_APPWINDOW | WS_EX_WINDOWEDGE;
   dwStyle = WS_OVERLAPPEDWINDOW;
-  if( !(hWnd=CreateWindowEx( dwExStyle, "OpenGL", "OpenGL",
+  if( !(hWnd=CreateWindowEx( dwExStyle,
+                             JOGL_DUMMY_WINDOW_NAME,
+                             JOGL_DUMMY_WINDOW_NAME,
                              dwStyle | WS_CLIPSIBLINGS | WS_CLIPCHILDREN,
-                             rect.left, rect.top, rect.right - rect.left, rect.bottom - rect.top,
+                             x, y, width, height,
                              NULL, NULL, hInstance, NULL ) ) ) {
     return( 0 );
   }
   return( hWnd );
 }
-
-void NativeEventLoop() {
-  MSG msg;
-  BOOL ret;
-  // Grab windows system messages from queue
-  while( ( ret = GetMessage( &msg, NULL, 0, 0 ) ) != 0 ) {
-    if( ret == -1 ) {
-      printf( "Error GetMessage: %d", GetLastError() );
-    } else {
-      DispatchMessage( &msg ); 
-    }
-  }
-}
-
-void DestroyDummyWindow(HWND handle, HDC hdc) {
-  // Post a close window message from shutdown hook thread to
-  // window message pump thread
-  if( !PostMessage( handle, WM_CLOSE, 0, (LPARAM) hdc ) ) {
-    printf( "PostMessage Failed: %d\n", GetLastError() );
-  }
-}
-
-LRESULT CALLBACK WndProc( HWND   hWnd, UINT   uMsg, WPARAM wParam, LPARAM lParam) {
-  switch( uMsg ) {
-    case WM_CLOSE:
-      // Destroy HDC
-      if( ReleaseDC( hWnd, (HDC) lParam ) != 1 ) {
-        printf( "Error Releasing DC: %d\n", GetLastError() );
-      }
-      // Destroy HWND
-      if( DestroyWindow( hWnd ) == 0 ) {
-        printf( "Error Destroying Window: %d\n", GetLastError() );
-      }
-      break;
-    case WM_DESTROY:
-      // Terminate Dummy Window
-      PostQuitMessage(0);
-      return(0);
-  }
-  return DefWindowProc(hWnd,uMsg,wParam,lParam);
-}