C++Builder使用海康SDK报错的问题

[木叶流丹]

使用CB6对海康SDK进行二次开发，调用海康 "HCNetSDK.h"文件，初始化都报错。
主程序Main.cpp：

//---------------------------------------------------------------------------
#pragma package(smart_init)
#pragma resource "*.dfm"
TfrmMain *frmMain;
unsigned int iLastErr = 0;
int m_lUserID = -1;
bool m_bInitSDK = false;
bool m_bRecord = false;
int m_lRealHandle = -1;
//---------------------------------------------------------------------------
__fastcall TfrmMain::TfrmMain(TComponent* Owner)
	: TForm(Owner)
{
}
//---------------------------------------------------------------------------
void __fastcall TfrmMain::FormCreate(TObject *Sender)
{
	m_bInitSDK = NET_DVR_Init() ;
	if (m_bInitSDK == false)
	{
		ShowMessage("NET_DVR_Init error!") ;
	}
	else
	{
		//保存SDK日志 To save the SDK log
		NET_DVR_SetLogToFile(3, "C:\\SdkLog\\", true) ;
	}
}
//---------------------------------------------------------------------------
//登录
void __fastcall TfrmMain::btnLoginClick(TObject *Sender)
{
 	if (edtIP->Text==""||edtPort->Text==""||edtUser->Text==""||edtPsw->Text=="")
	{
		ShowMessage("请输入设备地址、端口、用户名和密码！") ;
		return ;
	}
	if (m_lUserID < 0)
	{
		String DVRIPAddress = edtIP->Text ; 			//设备IP地址或者域名
		int DVRPortNumber = edtPort->Text.ToInt() ;		//设备服务端口号
		String DVRUserName = edtUser->Text ;			//设备登录用户名
		String DVRPassword = edtPsw->Text ;				//设备登录密码
		NET_DVR_DEVICEINFO_V30 DeviceInfo ;
		//登录设备
		m_lUserID = NET_DVR_Login_V30(DVRIPAddress.c_str(), DVRPortNumber, DVRUserName.c_str(), DVRPassword.c_str(), &DeviceInfo) ;
		if (m_lUserID < 0)
		{
			iLastErr = NET_DVR_GetLastError() ;
			str = "NET_DVR_Login_V30 failed, error code= " + iLastErr ; //登录失败，输出错误号
			ShowMessage(str) ;
			return ;
		}
		else
		{
			//登录成功
			ShowMessage("Login Success!") ;
			btnLogin->Caption = "Logout" ;
		}
	}
	else
	{
		//注销登录 Logout the device
		if (m_lRealHandle >= 0)
		{
			ShowMessage("Please stop live view firstly") ;
			return ;
		}

		if (!NET_DVR_Logout(m_lUserID))
		{
			iLastErr = NET_DVR_GetLastError() ;
			str = "NET_DVR_Logout failed, error code= " + iLastErr ;
			ShowMessage(str) ;
			return ;
		}
		m_lUserID = -1 ;
		btnLogin->Caption = "Login" ;
	}   
}
//---------------------------------------------------------------------------

头文件Main.h：

//---------------------------------------------------------------------------

#ifndef MainH
#define MainH
//---------------------------------------------------------------------------
#include <Classes.hpp>
#include <Controls.hpp>
#include <ExtCtrls.hpp>
#include <StdCtrls.hpp>
#include "HCNetSDK.h"
//---------------------------------------------------------------------------
class TfrmMain : public TForm
{
__published:	// IDE-managed Components
	TImage *imgPreview;
	TPanel *pnlPreview;
	TLabel *lblIP;
	TEdit *edtIP;
	TEdit *edtPort;
	TLabel *lblPort;
	TEdit *edtUser;
	TLabel *lblUser;
	TEdit *edtPsw;
	TLabel *lblPsw;
	TButton *btnLogin;
	TButton *btnPreview;
	TLabel *lblChannel;
	TEdit *edtChannel;
	void __fastcall FormCreate(TObject *Sender);
	void __fastcall btnLoginClick(TObject *Sender);
    void __fastcall btnPreviewClick(TObject *Sender);
private:	// User declarations
    String str ;
public:		// User declarations
	__fastcall TfrmMain(TComponent* Owner);
};
//---------------------------------------------------------------------------
extern PACKAGE TfrmMain *frmMain;
//---------------------------------------------------------------------------
#endif

报错信息：
[Linker Error] Unresolved external 'NET_DVR_Init' referenced from G:\MY_CBUILDER\PERSONAL\PREV\MAIN.OBJ
[Linker Error] Unresolved external 'NET_DVR_SetLogToFile' referenced from G:\MY_CBUILDER\PERSONAL\PREV\MAIN.OBJ
[Linker Error] Unresolved external 'NET_DVR_Login_V30' referenced from G:\MY_CBUILDER\PERSONAL\PREV\MAIN.OBJ
[Linker Error] Unresolved external 'NET_DVR_Logout' referenced from G:\MY_CBUILDER\PERSONAL\PREV\MAIN.OBJ
[Linker Error] Unresolved external 'NET_DVR_GetLastError' referenced from G:\MY_CBUILDER\PERSONAL\PREV\MAIN.OBJ

海康 "HCNetSDK.h"文件部分内容

/********************************SDK接口函数声明*********************************/
NET_DVR_API BOOL __stdcall NET_DVR_Init();
NET_DVR_API BOOL __stdcall NET_DVR_Cleanup();

//NET_DVR_SetDVRMessage的扩展
#ifdef _WIN32
NET_DVR_API BOOL __stdcall NET_DVR_SetDVRMessage(UINT nMessage,HWND hWnd);
NET_DVR_API BOOL __stdcall NET_DVR_SetExceptionCallBack_V30(UINT nMessage, HWND hWnd, void (CALLBACK* fExceptionCallBack)(DWORD dwType, LONG lUserID, LONG lHandle, void *pUser), void *pUser);
#elif defined(__linux__) || defined(__APPLE__)
NET_DVR_API BOOL __stdcall NET_DVR_SetExceptionCallBack_V30(UINT reserved1, void* reserved2, void (CALLBACK* fExceptionCallBack)(DWORD dwType, LONG lUserID, LONG lHandle, void *pUser), void *pUser);
/*Linux专有 */
#if defined(__linux__)
NET_DVR_API BOOL NET_DVR_DrawAreaInit(INITINFO InitInfo, DWORD iUseSDL = 1);
NET_DVR_API BOOL NET_DVR_DrawAreaRelease();
#endif
#endif

[木叶流丹]

网上说是只是加入了HCNetSDK.h，没有加入HCNetSDK.cpp或者lib即函数实现，于是在工程中加入HCNetSDK.lib，还是报错： [Linker Error] 'G:\MY_CBUILDER\PERSONAL\PREV\HCNETSDK.LIB' contains invalid OMF record, type 0x21 (possibly COFF)

[木叶流丹]

继续百度：用C++Builder6.0 调用三方VC做的lib文件时，编译的时候出现如下错误： “contains invalid OMF record, type 0x21 (possibly COFF)” 必须将lib先转换成CB格式的，需要使用CB安装目录下bin里的coff2omf工具。 转换步骤： 1.在系统路径Path里加入“C:\Program Files\Borland\CBuilder6\Bin”； 2.将VC的lib文件“HCNetSDK.lib”拷贝到G盘； 3.cmd 进入 G盘； 4.coff2omf -lib:ms HCNetSDK.lib bcb HCNetSDK_1.lib 5.提示：COFF to OMF Converter Version 1.2.0 Copyright (c) 1999-2009 Embarcadero Technolo gies, Inc. All rights reserved. 转换成功 6.加入CB工程，编译通过。 完美解决

[ooolinux]

不错不错，分享有价

[我不懂电脑]

很好的经验。

[weixin_50869063]

Project->add to project，添加HCNetSDK.lib