APIフック？

hoge.cpp

#define UNICODE
#include <stdio.h>
#include <windows.h>


typedef FARPROC (WINAPI *DelayLoadFailureHook) 
(  _In_ LPCSTR pszDllName,
  _In_ LPCSTR pszProcName
);

typedef PVOID (WINAPI *ResolveDelayLoadedAPI) 
(  _In_       PVOID                             ParentModuleBase,
  _In_       void*      DelayloadDescriptor,
  _In_opt_   void*   FailureDllHook,
  _In_opt_   void* FailureSystemHook,
  _Out_      PIMAGE_THUNK_DATA                 ThunkAddress,
  _Reserved_ ULONG                             Flags
);


int WINAPI Hook_MessageBox(
  _In_opt_ HWND    hWnd,
  _In_opt_ LPCTSTR lpText,
  _In_opt_ LPCTSTR lpCaption,
  _In_     UINT    uType
)
{
	return 0;
	
}


void hoge()
{

	HMODULE hDll =  GetModuleHandleW(L"user32.dll");
	FARPROC proc = GetProcAddress(hDll, "MessageBoxW");

	HMODULE hDll2 = LoadLibraryW(L"api-ms-win-core-delayload-l1-1-1.dll");
	FARPROC proc2 = GetProcAddress(hDll2, "DelayLoadFailureHook");
	FARPROC proc3 = GetProcAddress(hDll2, "ResolveDelayLoadedAPI");
	
	DelayLoadFailureHook p_DelayLoadFailureHook =(DelayLoadFailureHook)proc2;
	ResolveDelayLoadedAPI p_ResolveDelayLoadedAPI =(ResolveDelayLoadedAPI)proc3;

	
	IMAGE_THUNK_DATA st = {0};
	st.u1.AddressOfData = (DWORD)proc;
	
	void* ptr = p_ResolveDelayLoadedAPI(GetModuleHandleW(nullptr), hDll, 0, p_DelayLoadFailureHook, &st, 0);

	char Buf[50];
	sprintf(Buf,"%x", ptr);
	MessageBoxA(0,Buf, "", MB_OK);
	FreeLibrary(hDll2);

}


	
int CALLBACK WinMain(
  _In_ HINSTANCE hInstance,
  _In_ HINSTANCE hPrevInstance,
  _In_ LPSTR     lpCmdLine,
  _In_ int       nCmdShow
)
{
	hoge();
	return 0;
}