关键词： GetProcAddress

/*

本程序通过GetProcAddress方法调用Api

int (__stdcall *MsgBox)(HWND ,LPSTR,LPSTR,int);

(FARPROC&)MsgBox=GetProcAddress(hMod,\"MessageBoxA\");

MsgBox1(Null,"hello,I love you","Caption",0);

typedef int (__stdcall *MSGBOX)(HWND ,LPSTR ,LPSTR ,INT);

MSGBOX MsgBox2=(MSGBOX)GetProcAddress(hMod,"MessageBoxA");

MsgBox2(Null,"hello,I love you","Caption",0);

*/

#include <windows.h>

void main()

{

HMODULE hMod=LoadLibrary("user32.dll");

/////////////Api调用的方法一//////////////////////////

int (__stdcall *MsgBox1)(HWND ,LPSTR,LPSTR,int);

(FARPROC&)MsgBox1=GetProcAddress(hMod,"MessageBoxA");

/////////////Api调用的方法二//////////////////////////

typedef int (__stdcall *MSGBOX)(HWND ,LPSTR ,LPSTR ,INT);

MSGBOX MsgBox2=(MSGBOX)GetProcAddress(hMod,"MessageBoxA");

MsgBox1(NULL,"通过函数指针调用Api成功!\n\n"

"1、int (__stdcall *MsgBox)(HWND ,LPSTR,LPSTR,int);\n"

"2、(FARPROC&)MsgBox=GetProcAddress(hMod,\"MessageBoxA\");\n"

"3、MsgBox(Null,\"hello,I love you\",\"Caption\",0);",

"通过函数指针调用Api，方法一:",0);

MsgBox2(NULL,"通过函数指针调用Api成功!\n\n"

"1、typedef int (__stdcall *MSGBOX)(HWND ,LPSTR ,LPSTR ,INT);\n"

"2、MSGBOX MsgBox2=(MSGBOX)GetProcAddress(hMod,\"MessageBoxA\");\n"

"3、MsgBox2(Null,\"hello,I love you\",\"Caption\",0);",

"通过函数指针调用Api，方法二:",0);

return;

}