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// license:BSD-3-Clause
// copyright-holders:Aaron Giles
//============================================================
//
// winutil.h - Win32 OSD core utility functions
//
//============================================================
#ifndef __WINUTIL__
#define __WINUTIL__
#include "osdcore.h"
#include <string>
#include <vector>
// Shared code
file_error win_error_to_file_error(DWORD error);
osd_dir_entry_type win_attributes_to_entry_type(DWORD attributes);
BOOL win_is_gui_application(void);
HMODULE WINAPI GetModuleHandleUni();
//-----------------------------------------------------------
// Lazy loaded function using LoadLibrary / GetProcAddress
//-----------------------------------------------------------
class lazy_loaded_function
{
private:
std::string m_name;
std::vector<std::wstring> m_dll_names;
HMODULE m_module;
bool m_initialized;
protected:
void check_init();
FARPROC m_pfn;
public:
lazy_loaded_function(const char * name, const wchar_t* dll_name);
lazy_loaded_function(const char * name, const wchar_t** dll_names, int dll_count);
~lazy_loaded_function();
int initialize();
const char * name() { return m_name.c_str(); }
};
// No parameters
template <class TRet>
class lazy_loaded_function_ret : public lazy_loaded_function
{
public:
lazy_loaded_function_ret(const char * name, const wchar_t* dll_name)
: lazy_loaded_function(name, &dll_name, 1)
{
}
lazy_loaded_function_ret(const char * name, const wchar_t** dll_names, int dll_count)
: lazy_loaded_function(name, dll_names, dll_count)
{
}
TRet operator ()()
{
check_init();
return ((TRet(__stdcall *) ())m_pfn)();
}
};
// One parameter
template <class TRet, class P1>
class lazy_loaded_function_p1 : public lazy_loaded_function
{
public:
lazy_loaded_function_p1(const char * name, const wchar_t* dll_name)
: lazy_loaded_function(name, &dll_name, 1)
{
}
lazy_loaded_function_p1(const char * name, const wchar_t** dll_names, int dll_count)
: lazy_loaded_function(name, dll_names, dll_count)
{
}
TRet operator ()(P1 p1)
{
check_init();
return ((TRet(__stdcall *) (P1))m_pfn)(p1);
}
};
// Two parameters
template <class TRet, class P1, class P2>
class lazy_loaded_function_p2 : public lazy_loaded_function
{
public:
lazy_loaded_function_p2(const char * name, const wchar_t* dll_name)
: lazy_loaded_function(name, &dll_name, 1)
{
}
lazy_loaded_function_p2(const char * name, const wchar_t** dll_names, int dll_count)
: lazy_loaded_function(name, dll_names, dll_count)
{
}
TRet operator ()(P1 p1, P2 p2)
{
check_init();
return ((TRet(__stdcall *) (P1, P2))m_pfn)(p1, p2);
}
};
// Three parameters
template <class TRet, class P1, class P2, class P3>
class lazy_loaded_function_p3 : public lazy_loaded_function
{
public:
lazy_loaded_function_p3(const char * name, const wchar_t* dll_name)
: lazy_loaded_function(name, &dll_name, 1)
{
}
lazy_loaded_function_p3(const char * name, const wchar_t** dll_names, int dll_count)
: lazy_loaded_function(name, dll_names, dll_count)
{
}
TRet operator ()(P1 p1, P2 p2, P3 p3)
{
check_init();
return ((TRet(__stdcall *) (P1, P2, P3))m_pfn)(p1, p2, p3);
}
};
// Four parameters
template <class TRet, class P1, class P2, class P3, class P4>
class lazy_loaded_function_p4 : public lazy_loaded_function
{
public:
lazy_loaded_function_p4(const char * name, const wchar_t* dll_name)
: lazy_loaded_function(name, &dll_name, 1)
{
}
lazy_loaded_function_p4(const char * name, const wchar_t** dll_names, int dll_count)
: lazy_loaded_function(name, dll_names, dll_count)
{
}
TRet operator ()(P1 p1, P2 p2, P3 p3, P4 p4)
{
check_init();
return ((TRet(__stdcall *) (P1, P2, P3, P4))m_pfn)(p1, p2, p3, p4);
}
};
#endif // __WINUTIL__
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