POINTMARSHALER.C

// Copyright (c) 1996-1997  Microsoft Corporation.  All rights reserved. 
 
#pragma hdrstop 
 
#define INITGUID 1 
#include <windows.h> 
#include "native.h" // Raw Native Interface declarations. 
 
 
 
typedef POINT *PPOINT, **PPPOINT; 
 
 
typedef OBJECT* JPoint; 
 
#ifdef __cplusplus 
#define EXTERNC     extern "C" 
#else 
#define EXTERNC 
#endif 
 
 
// Macro for declaring RNI Java methods's (and encapsulating the java class package.) 
#define JAVAMETHOD(typ, name) \ 
    __declspec(dllexport) \ 
    EXTERNC \ 
    typ __cdecl PointMarshaler_##name 
 
 
 
#define LOGCALL(hookname) OutputDebugString("PointMarshaler." hookname "() called.\n") 
 
 
// Export that tells what RNI version we were built under. 
DWORD __cdecl RNIGetCompatibleVersion() 
{ 
  return RNIVER; 
} 
 
 
// Cache the various class and fields we will need. 
ClassClass*         gPointClass; 
struct fieldblock*  gPointXField; 
struct fieldblock*  gPointYField; 
 
 
 
//========================================================================== 
// toJava 
//========================================================================== 
JAVAMETHOD(JPoint, toJava) (OBJECT*x, PPPOINT ppPOINT, int flags) 
{ 
    PPOINT pPOINT = *ppPOINT; 
    JPoint jpoint; 
 
    LOGCALL("toJava"); 
 
    jpoint = execute_java_constructor(NULL, NULL, gPointClass, "(II)", pPOINT->x, pPOINT->y); 
    return jpoint; 
} 
 
 
//========================================================================== 
// copyToExternal 
//========================================================================== 
JAVAMETHOD(void, copyToExternal) (OBJECT*x, JPoint javaval, PPPOINT ppPOINT, int flags) 
{ 
    PPOINT pPOINT = *ppPOINT; 
 
    LOGCALL("copyToExternal"); 
 
    pPOINT->x = Field_GetInt(javaval, gPointXField); 
    pPOINT->y = Field_GetInt(javaval, gPointYField); 
 
} 
 
 
 
 
//========================================================================== 
// copyToJava 
//========================================================================== 
JAVAMETHOD(void, copyToJava) (OBJECT*x, PPPOINT ppPOINT, JPoint javaval, int flags) 
{ 
    PPOINT pPOINT = *ppPOINT;    \ 
 
    LOGCALL("copyToJava"); 
 
 
    Field_SetInt(javaval, gPointXField, pPOINT->x); 
    Field_SetInt(javaval, gPointYField, pPOINT->y); 
 
} 
 
 
//========================================================================== 
// toUninitJava 
//========================================================================== 
JAVAMETHOD(JPoint, toUninitJava) (OBJECT*x, PPPOINT ppPOINT, int flags) 
{ 
    JPoint jpoint; 
 
    LOGCALL("toUninitJava"); 
 
    jpoint = execute_java_constructor(NULL, NULL, gPointClass, "(II)", -1, -1); 
    return jpoint; 
} 
 
 
 
 
 
//========================================================================== 
// TODO: Remove this copy of DllMain if you are embedding this file in your 
//  own DLL. 
// DLL Loader entry point. 
//========================================================================== 
BOOL WINAPI DllMain(HINSTANCE hmod, DWORD dwReason, 
                                PVOID pvReserved) 
{ 
   return TRUE; 
} 
 
 
 
//========================================================================== 
// classInit (one time initialization routine) 
//========================================================================== 
JAVAMETHOD(void, classInit) (OBJECT*x) 
{ 
    gPointClass = FindClass(NULL, "java/awt/Point", TRUE); 
    if (!gPointClass) { 
        SignalErrorPrintf("java/lang/ClassNotFoundException", "Could not preload java.awt.Point class!"); 
    } 
 
    gPointXField = Class_GetField(gPointClass, "x"); 
    if (!gPointXField) { 
        SignalErrorPrintf("java/lang/ClassNotFoundException", "Bogus java.awt.Point class!"); 
    } 
 
    gPointYField = Class_GetField(gPointClass, "y"); 
    if (!gPointYField) { 
        SignalErrorPrintf("java/lang/ClassNotFoundException", "Bogus java.awt.Point class!"); 
    } 
}