template project, first version

AntTweakBar/src/TwEventSDL.c

@@ -0,0 +1,43 @@
+//  ---------------------------------------------------------------------------
+//
+//  @file       TwEventSDL.c
+//  @brief      Helper: 
+//              translate and re-send mouse and keyboard events 
+//              from SDL event loop to AntTweakBar
+//  
+//  @author     Philippe Decaudin
+//  @license    This file is part of the AntTweakBar library.
+//              For conditions of distribution and use, see License.txt
+//
+//  note:       AntTweakBar.dll does not need to link with SDL, 
+//              it just needs some definitions for its helper functions.
+//
+//  ---------------------------------------------------------------------------
+
+#include <AntTweakBar.h>
+
+int TW_CALL TwEventSDL12(const void *sdlEvent); // implemented in TwEventSDL12.c
+int TW_CALL TwEventSDL13(const void *sdlEvent); // implmeneted in TwEventSDL13.c
+#ifdef  __cplusplus
+    extern "C" { int TW_CALL TwSetLastError(const char *staticErrorMessage); }
+#else
+    int TW_CALL TwSetLastError(const char *staticErrorMessage);
+#endif  // __cplusplus
+
+
+//  TwEventSDL returns zero if msg has not been handled or the SDL version 
+//  is not supported, and a non-zero value if it has been handled by the 
+//  AntTweakBar library.
+int TW_CALL TwEventSDL(const void *sdlEvent, unsigned char majorVersion, unsigned char minorVersion)
+{
+    if (majorVersion < 1 || (majorVersion == 1 && minorVersion < 2))
+    {
+        static const char *g_ErrBadSDLVersion = "Unsupported SDL version";
+        TwSetLastError(g_ErrBadSDLVersion);
+        return 0;
+    }
+    else if (majorVersion == 1 && minorVersion == 2)
+        return TwEventSDL12(sdlEvent);
+    else // if( majorVersion==1 && minorVersion==3 ) 
+        return TwEventSDL13(sdlEvent); // will probably not work for version > 1.3, but give it a chance
+}