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覆巢之下焉有完卵。出来道上混,迟早是要还的。

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用DLL中的函数在主对话框上点到点画线

2011-12-09 22:39:28| 分类： VC++ | 标签： |举报 |字号大中小订阅

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用DLL中的函数在主对话框上点到点画线 - 加菲 - 视频会议软件开发 - 加菲


void CTest2Dlg::OnButton3() 
{
 // TODO: Add your control notification handler code here
 typedef void(*pDrawLinePointToPoint)(CDC *pDC,CDialog *pDlg,CPoint pt1,CPoint pt2); 
 
 HINSTANCE hDLL; 
 pDrawLinePointToPoint DrawLine1;

 hDLL=LoadLibrary("WBDLL.dll");//加载动态链接库MyDll.dll文件； 

 DrawLine1 = (pDrawLinePointToPoint)GetProcAddress(hDLL,"DrawLinePointToPoint"); 

 CDC *pDC;
 pDC = this->GetDC();
 CPoint pt1,pt2;

 pt1.x=200;
 pt1.y= 0;

 pt2.x=200;
 pt2.y=300;

 DrawLine1(pDC,this,pt1,pt2);

 CPoint pt3;
 pt3.x=250;
 pt3.y=300;
 DrawLine1(pDC,this,pt1,pt3);

 FreeLibrary(hDLL);//卸载MyDll.dll文件； 
}

extern "C" __declspec(dllexport) void DrawLine(CDC *pDC,CDialog *pDlg);
extern "C" __declspec(dllexport) void DrawLinePointToPoint(CDC *pDC,CDialog *pDlg,CPoint pt1,CPoint pt2);

void DrawLine(CDC *pDC,CDialog *pDlg)
{
 pDC->MoveTo(0,0);
 pDC->LineTo(200,200);
}

void DrawLinePointToPoint(CDC *pDC,CDialog *pDlg,CPoint pt1,CPoint pt2)
{
 pDC->MoveTo(pt1);
 pDC->LineTo(pt2);
}

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              blogAbstract:'<div\><img title=\"用DLL中的函数在主对话框上点到点画线 - 加菲 - 视频会议软件开发 - 加菲\"  alt=\"用DLL中的函数在主对话框上点到点画线 - 加菲 - 视频会议软件开发 - 加菲\"  style=\"margin:0 10px 0 0;\"  src=\"http://img1.ph.126.net/Ysjeh6dRyaMc3lDCDWBvoQ==/1094656184444874201.jpg\"  \></div\><div\><br\></div\><div\><pre class=\"prettyprint\"  \><p\><br\>void CTest2Dlg::OnButton3() <br\>{<br\> // TODO: Add your control notification handler code here<br\> typedef void(*pDrawLinePointToPoint)(CDC *pDC,CDialog *pDlg,CPoint pt1,CPoint pt2); <br\> <br\> HINSTANCE hDLL; <br\> pDrawLinePointToPoint DrawLine1;<br\><br\> hDLL=LoadLibrary(\"WBDLL.dll\");//加载动态链接库MyDll.dll文件； <br\><br\> DrawLine1 = (pDrawLinePointToPoint)GetProcAddress(hDLL,\"DrawLinePointToPoint\"); <br\><br\> CDC *pDC;<br\> pDC = this->GetDC();</p\></pre\></div\>',
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