VC++开发简单DLL并调用

悠悠 2023-01-09 15:43 304阅读 0赞

win7, vc6；

新建一个win32 动态链接库工程；名为 dlltest；

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70][]

空工程 ；

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 1][]

添加Cpp和h文件；

#include "test.h"
    
    int iadd(int x, int y)
    {
    	return x + y;
    }

#ifndef LIB_H
    #define LIB_H
    extern "C" int __declspec(dllexport) iadd(int x, int y);
    #endif

然后生成一下工程；

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 2][]

新建一个MFC 单文档工程；

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 3][]

视图类cpp文件头部添加，

\#pragma comment(lib,"dlltest.lib")   
extern "C" \_\_declspec(dllimport) iadd(int x,int y);

OnDraw函数；

void CTestcallView::OnDraw(CDC* pDC)
    {
    	CTestcallDoc* pDoc = GetDocument();
    	ASSERT_VALID(pDoc);
    	// TODO: add draw code for native data here
    	CString str1;
    	int result = iadd(202,307); 
    	str1.Format("iadd result: %d", result);
    	pDC->TextOut(50,50, str1);
    }

拷贝dll和lib到testcall工程目录；

![watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 4][]

运行，结果如下；

![20210122031744463.png][]

工程；

![20210122031754593.png][]

[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70]: /images/20221119/a6d34707a5034a818c4f6384584c14cb.png
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 1]: https://img-blog.csdnimg.cn/2021012203170512.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 2]: https://img-blog.csdnimg.cn/20210122031716246.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 3]: https://img-blog.csdnimg.cn/20210122031725595.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24=,size_16,color_FFFFFF,t_70
[watermark_type_ZmFuZ3poZW5naGVpdGk_shadow_10_text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24_size_16_color_FFFFFF_t_70 4]: https://img-blog.csdnimg.cn/20210122031735219.png?x-oss-process=image/watermark,type_ZmFuZ3poZW5naGVpdGk,shadow_10,text_aHR0cHM6Ly9ibG9nLmNzZG4ubmV0L2JjYm9ibzIxY24=,size_16,color_FFFFFF,t_70
[20210122031744463.png]: https://img-blog.csdnimg.cn/20210122031744463.png
[20210122031754593.png]: https://img-blog.csdnimg.cn/20210122031754593.png