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Ctl3d.c
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Ctl3d.c
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/********************************************************\
|* *|
|* Program: WinVi *|
|* Author: Raphael Molle *|
|* Compiler: several *|
|* --------------------- -------------------------- *|
|* © Copyright 1994-2012 by Raphael Molle, Berlin *|
|* © Copyleft by GPL See file COPYING for more *|
|* info about terms of use *|
|* *|
\********************************************************/
/* revision log:
* 3-Dec-2000 first publication of source code
* 31-Aug-2010 DLL load from system directory only
*/
#include <windows.h>
#include "winvi.h"
#include "ctl3d.h"
static HINSTANCE Ctl3dDll;
static FARPROC AutoSubclass, Enabled, ColorChange, Unregister;
BOOL WINAPI Ctl3dRegister(HANDLE hInst)
{
#if defined(WIN32)
PARAM_NOT_USED(hInst);
return (FALSE);
#else
UINT PrevState = SetErrorMode(SEM_NOOPENFILEERRORBOX);
static FARPROC Register;
if ((UINT)(Ctl3dDll = LoadLibrary(ExpandSys32("ctl3d.dll"))) < 32) {
Ctl3dDll = NULL;
SetErrorMode(PrevState);
return (FALSE);
}
SetErrorMode(PrevState);
Register = GetProcAddress(Ctl3dDll, "Ctl3dRegister");
AutoSubclass = GetProcAddress(Ctl3dDll, "Ctl3dAutoSubclass");
Enabled = GetProcAddress(Ctl3dDll, "Ctl3dEnabled");
ColorChange = GetProcAddress(Ctl3dDll, "Ctl3dColorChange");
Unregister = GetProcAddress(Ctl3dDll, "Ctl3dUnregister");
if (!Register || !AutoSubclass || !Enabled || !ColorChange
|| !Unregister) {
FreeLibrary(Ctl3dDll);
Ctl3dDll = NULL;
return (FALSE);
}
return ((*(BOOL (WINAPI FAR*)(HINSTANCE))Register)(hInst));
#endif
}
BOOL WINAPI Ctl3dAutoSubclass(HANDLE hInst)
{
if (!Ctl3dDll) return (FALSE);
return ((*(BOOL (WINAPI FAR*)(HINSTANCE))AutoSubclass)(hInst));
}
BOOL WINAPI Ctl3dEnabled(void)
{
if (!Ctl3dDll) return (FALSE);
return ((*(BOOL (WINAPI FAR*)(VOID))Enabled)());
}
BOOL WINAPI Ctl3dColorChange(void)
{
if (!Ctl3dDll) return (FALSE);
return ((*(BOOL (WINAPI FAR*)(VOID))ColorChange)());
}
BOOL WINAPI Ctl3dUnregister(HANDLE hInst)
{ BOOL ret;
if (!Ctl3dDll) return (FALSE);
ret = (*(BOOL (WINAPI FAR*)(HINSTANCE))Unregister)(hInst);
FreeLibrary(Ctl3dDll);
Ctl3dDll = NULL;
return (ret);
}