生成dll库

#include<Windows.h>



//导出函数，可以加载的时候调用
_declspec(dllexport) void msg()
{

	MessageBoxA(0, "1", "2", 0);
}
//导出函数，可以加载的时候调用
_declspec(dllexport) int  add(int a, int b)
{
	return a + b;
}

调用dll库

#include<Windows.h>
#include<stdlib.h>
#include<stdio.h>


typedef void(*procA)();
typedef int (*procB)(int a,int b);
void main()
{

	HMODULE hdll = LoadLibrary("DLL.dll");  //加载dll
	if (hdll != NULL)
	{
		
		procB proc1 = (procB*)GetProcAddress(hdll, "add");
		if (proc1 != NULL)
		{
			printf("%d", proc1(4, 8));

		}
		FARPROC proc = GetProcAddress(hdll, "msg");
		if (proc != NULL)
		{
			proc();

		}
	}
	return 0;


}

windows编程，加载dll库示例