本文主要總結將類生成dll並且調用中遇到的坑和操作。平時打包成一個類的好處在於內部可以有多個成員函數供以調用，且成員變量也可以共用。如果平時想用到多個函數打包成的dll，那一個個封裝會很繁瑣，且多個函數間可能會用到共用的變量，**分開封裝，相應變量將得不到及時的更新。因爲每次主線程進入dll的時候，相應變量是不共享內存的，dll中操作的是變量的拷貝版，而不是變量本身。**所以今後儘量將多個函數統一成一個類內的成員函數最好，坑也相對來說最少。

類的封裝

類的封裝，在VS中生成：
1…h文件聲明類及內部成員
2…cpp文件定義函數及變量

.h文件包含內容

#pragma once
#ifndef __COMANGLE_H__
#define __COMANGLE_H__


#include "windows.h"
#include <stdio.h>
#include <tchar.h>

//#ifdef _WIN32
//#ifdef CCA_API         //這個在哪裏定義了？
#define CCA_API __declspec(dllexport)
//#else
//#define CCA_API __declspec(dllimport)
//#endif
//#else
//#define CCA_API __attribute__ ((visibility("default")))
//#endif

#ifndef JY901_h
#define JY901_h

#define SAVE 			0x00
#define CALSW 		0x01
#define RSW 			0x02
#define RRATE			0x03
#define BAUD 			0x04
#define AXOFFSET	0x05
#define AYOFFSET	0x06
#define AZOFFSET	0x07
#define GXOFFSET	0x08
#define GYOFFSET	0x09
#define GZOFFSET	0x0a
#define HXOFFSET	0x0b
#define HYOFFSET	0x0c
#define HZOFFSET	0x0d
#define D0MODE		0x0e
#define D1MODE		0x0f
#define D2MODE		0x10
#define D3MODE		0x11
#define D0PWMH		0x12
#define D1PWMH		0x13
#define D2PWMH		0x14
#define D3PWMH		0x15
#define D0PWMT		0x16
#define D1PWMT		0x17
#define D2PWMT		0x18
#define D3PWMT		0x19
#define IICADDR		0x1a
#define LEDOFF 		0x1b
#define GPSBAUD		0x1c

#define YYMM				0x30
#define DDHH				0x31
#define MMSS				0x32
#define MS					0x33
#define AX					0x34
#define AY					0x35
#define AZ					0x36
#define GX					0x37
#define GY					0x38
#define GZ					0x39
#define HX					0x3a
#define HY					0x3b
#define HZ					0x3c			
#define Roll				0x3d
#define Pitch				0x3e
#define Yaw					0x3f
#define TEMP				0x40
#define D0Status		0x41
#define D1Status		0x42
#define D2Status		0x43
#define D3Status		0x44
#define PressureL		0x45
#define PressureH		0x46
#define HeightL			0x47
#define HeightH			0x48
#define LonL				0x49
#define LonH				0x4a
#define LatL				0x4b
#define LatH				0x4c
#define GPSHeight   0x4d
#define GPSYAW      0x4e
#define GPSVL				0x4f
#define GPSVH				0x50

#define DIO_MODE_AIN 0
#define DIO_MODE_DIN 1
#define DIO_MODE_DOH 2
#define DIO_MODE_DOL 3
#define DIO_MODE_DOPWM 4
#define DIO_MODE_GPS 5		


#define		TOTAL_PORT_NUM		65
#define		START_PORT_NUM		0

#define		iBufferSize 250
#define     UARTBufferLength 2000
#undef  SYNCHRONOUS_MODE


struct STime
{
	unsigned char ucYear;
	unsigned char ucMonth;
	unsigned char ucDay;
	unsigned char ucHour;
	unsigned char ucMinute;
	unsigned char ucSecond;
	unsigned short usMiliSecond;
};
struct SAcc
{
	short a[3];
	short T;
};
struct SGyro
{
	short w[3];
	short T;
};
struct SAngle
{
	short Angle[3];
	short T;
};
struct SMag
{
	short h[3];
	short T;
};
struct SDStatus
{
	short sDStatus[4];
};
struct SPress
{
	long lPressure;
	long lAltitude;
};
struct SLonLat
{
	long lLon;
	long lLat;
};
struct SGPSV
{
	short sGPSHeight;
	short sGPSYaw;
	long lGPSVelocity;
};
class CCA_API CCA
{
public:
	struct STime		stcTime;
	struct SAcc 		stcAcc;
	struct SGyro 		stcGyro;
	struct SAngle 		stcAngle;
	struct SMag 		stcMag;
	struct SDStatus 	stcDStatus;
	struct SPress 		stcPress;
	struct SLonLat 		stcLonLat;
	struct SGPSV 		stcGPSV;

	//static成員變量須在類外定義
	static HANDLE		 hComDev[TOTAL_PORT_NUM];
	static unsigned long long ulComMask;
	static HANDLE		 hCOMThread[TOTAL_PORT_NUM];
	static OVERLAPPED	 stcWriteStatus[TOTAL_PORT_NUM];
	static OVERLAPPED	 stcReadStatus[TOTAL_PORT_NUM];

	static volatile char chrUARTBuffers[TOTAL_PORT_NUM][UARTBufferLength];
	static volatile unsigned long ulUARTBufferStart[TOTAL_PORT_NUM];
	static volatile unsigned long ulUARTBufferEnd[UARTBufferLength];

	static char chrUARTBufferOutput[1000];

	CCA();

	void CopeSerialData(unsigned short usLength);
	signed char	SendUARTMessageLength(const unsigned long ulChannelNo, const char chrMessage[], const unsigned short usLen);
	unsigned short CollectUARTData(const unsigned long ulChannelNo);
	signed char SetBaundrate(const unsigned long ulPortNo, const unsigned long ulBaundrate);
	signed char OpenCOMDevice(const unsigned long ulPortNo, const unsigned long ulBaundrate);
	void CloseCOMDevice(void);

	//由於後續要進行類型轉換，又是類內成員函數，所以要static修飾
	static DWORD WINAPI ReceiveCOMData(PVOID pParam);

	~CCA();
};
extern CCA ComAngle;
#endif

#endif

.cpp文件包含

#include "ComAngle.h"
#include "string.h"

CCA::CCA()
{
}

CCA::~CCA()
{
}

HANDLE	CCA::hComDev[TOTAL_PORT_NUM] = { NULL };  //初始化時不需要加static
unsigned long long CCA::ulComMask = 0;
HANDLE	CCA::hCOMThread[TOTAL_PORT_NUM] = { NULL };
OVERLAPPED	 CCA::stcWriteStatus[TOTAL_PORT_NUM] = { 0 };
OVERLAPPED	 CCA::stcReadStatus[TOTAL_PORT_NUM] = { 0 };
volatile char CCA::chrUARTBuffers[TOTAL_PORT_NUM][UARTBufferLength] = { 0 };
volatile unsigned long CCA::ulUARTBufferStart[TOTAL_PORT_NUM] = { 0 };
volatile unsigned long CCA::ulUARTBufferEnd[UARTBufferLength] = { 0 };

char CCA::chrUARTBufferOutput[1000] = { 0 };
CCA ComAngle = CCA();

void CCA::CopeSerialData(unsigned short usLength)
{
	static unsigned char chrTemp[2000];
	static unsigned char ucRxCnt = 0;
	static unsigned short usRxLength = 0;


	memcpy(chrTemp, chrUARTBufferOutput, usLength);
	usRxLength += usLength;
	while (usRxLength >= 11)
	{
		if (chrTemp[0] != 0x55)
		{
			usRxLength--;
			memcpy(&chrTemp[0], &chrTemp[1], usRxLength);
			continue;
		}
		switch (chrTemp[1])
		{
		case 0x50:	memcpy(&stcTime, &chrTemp[2], 8); break;
		case 0x51:	memcpy(&stcAcc, &chrTemp[2], 8); break;
		case 0x52:	memcpy(&stcGyro, &chrTemp[2], 8); break;
		case 0x53:	memcpy(&stcAngle, &chrTemp[2], 8); break;
		case 0x54:	memcpy(&stcMag, &chrTemp[2], 8); break;
		case 0x55:	memcpy(&stcDStatus, &chrTemp[2], 8); break;
		case 0x56:	memcpy(&stcPress, &chrTemp[2], 8); break;
		case 0x57:	memcpy(&stcLonLat, &chrTemp[2], 8); break;
		case 0x58:	memcpy(&stcGPSV, &chrTemp[2], 8); break;
		}
		usRxLength -= 11;
		memcpy(&chrTemp[0], &chrTemp[11], usRxLength);
	}
}



signed char CCA::SendUARTMessageLength(const unsigned long ulChannelNo, const char chrSendBuffer[], const unsigned short usLen)
{
	DWORD iR;
	DWORD dwRes;
	DCB dcb;
	char chrDataToSend[1000] = { 0 };
	memcpy(chrDataToSend, chrSendBuffer, usLen);
	memcpy(&chrDataToSend[usLen], chrSendBuffer, usLen);

	GetCommState(hComDev[ulChannelNo], &dcb);
	dcb.fDtrControl = 0;//DTR = 1;發送
	SetCommState(hComDev[ulChannelNo], &dcb);

	if (WriteFile(hComDev[ulChannelNo], chrSendBuffer, usLen, &iR, &(stcWriteStatus[ulChannelNo])) || GetLastError() != ERROR_IO_PENDING)
		return -1;
	dwRes = WaitForSingleObject(stcWriteStatus[ulChannelNo].hEvent, 1000);
	Sleep(10);
	dcb.fDtrControl = 1;//DTR = 0;接收
	SetCommState(hComDev[ulChannelNo], &dcb);
	Sleep(10);

	if (dwRes != WAIT_OBJECT_0 || !GetOverlappedResult(hComDev[ulChannelNo], &stcWriteStatus[ulChannelNo], &iR, FALSE))
		return 0;
	return 0;
}


unsigned short CCA::CollectUARTData(const unsigned long ulCOMNo)
{
	unsigned long ulLength = 0;
	unsigned long ulEnd;
	unsigned long ulStart;

#ifdef SYNCHRONOUS_MODE
	WaitForSingleObject(hReceiveEvent[ulIndexCorrect], INFINITE);
	ResetEvent(hReceiveEvent[ulIndexCorrect]);
#endif
	ulEnd = ulUARTBufferEnd[ulCOMNo];
	ulStart = ulUARTBufferStart[ulCOMNo];
	if (ulEnd == ulStart)
		return(0);
	if (ulEnd > ulStart)
	{
		memcpy((void*)chrUARTBufferOutput, (void*)(chrUARTBuffers[ulCOMNo] + ulStart), ulEnd - ulStart);
		ulLength = ulEnd - ulStart;
	}
	else
	{
		memcpy((void*)chrUARTBufferOutput, (void*)(chrUARTBuffers[ulCOMNo] + ulStart), UARTBufferLength - ulStart);
		if (ulEnd != 0)
		{
			memcpy((void*)(chrUARTBufferOutput + (UARTBufferLength - ulStart)), (void*)chrUARTBuffers[ulCOMNo], ulEnd);
		}
		ulLength = UARTBufferLength + ulEnd - ulStart;
	}
	ulUARTBufferStart[ulCOMNo] = ulEnd;
	return (unsigned short)ulLength;
}


signed char CCA::SetBaundrate(const unsigned long ulPortNo, const unsigned long ulBaundrate)
{

	DCB dcb;
	GetCommState(hComDev[ulPortNo], &dcb);
	dcb.BaudRate = ulBaundrate;
	SetCommState(hComDev[ulPortNo], &dcb);
	return 0;
}


//靜態成員函數實現定義也不需要加static，並且內部可以調用static變量，
//但一般成員變量，static成員函數不可直接調用
DWORD WINAPI CCA::ReceiveCOMData(PVOID pParam)   
{
	unsigned long uLen;
	unsigned long ulLen1;
	unsigned long ulLen2;
	DWORD	dwRes;
	COMSTAT Comstat;
	DWORD dwErrorFlags;
	char chrBuffer[iBufferSize] = { 0 };
	unsigned long ulUARTBufferEndTemp = ulUARTBufferEnd[0];

	unsigned long ulComNumber = 0;
	memcpy(&ulComNumber, pParam, 4);


	while (1)
	{
		if (!ReadFile(hComDev[ulComNumber], chrBuffer, iBufferSize - 1, &uLen, &(stcReadStatus[ulComNumber])))
		{
			dwRes = GetLastError();
			if (dwRes != ERROR_IO_PENDING)
			{
				ClearCommError(hComDev[ulComNumber], &dwErrorFlags, &Comstat);
				continue;
			}

			WaitForSingleObject(stcReadStatus[ulComNumber].hEvent, INFINITE);
			if (!GetOverlappedResult(hComDev[ulComNumber], &(stcReadStatus[ulComNumber]), &uLen, FALSE))
				continue;
			if (uLen <= 0)
				continue;
			if ((ulUARTBufferEndTemp + uLen) > UARTBufferLength)
			{
				ulLen1 = UARTBufferLength - ulUARTBufferEndTemp;
				ulLen2 = uLen - ulLen1;
				if (ulLen1 > 0)
				{
					memcpy((void *)&chrUARTBuffers[ulComNumber][ulUARTBufferEnd[ulComNumber]], (void *)chrBuffer, ulLen1);
				}
				if (ulLen2 > 0)
				{
					memcpy((void *)&chrUARTBuffers[ulComNumber][0], (void *)(chrBuffer + ulLen1), ulLen2);
				}
				ulUARTBufferEndTemp = ulLen2;
			}
			else
			{
				memcpy((void *)&chrUARTBuffers[ulComNumber][ulUARTBufferEnd[ulComNumber]], (void *)chrBuffer, uLen);
				ulUARTBufferEndTemp += uLen;
			}

			if (ulUARTBufferEndTemp == ulUARTBufferStart[ulComNumber])
			{
				printf("Error!");
			}
			else
			{
				ulUARTBufferEnd[ulComNumber] = ulUARTBufferEndTemp;
			}

#ifdef SYNCHRONOUS_MODE
			SetEvent(hReceiveEvent[ucComNumber]);
#endif
			continue;
		}

		if (uLen <= 0)
			continue;
		if ((ulUARTBufferEndTemp + uLen) > (UARTBufferLength))
		{
			ulLen1 = UARTBufferLength - ulUARTBufferEndTemp;
			ulLen2 = uLen - ulLen1;
			if (ulLen1 > 0)
			{
				memcpy((void *)&chrUARTBuffers[ulComNumber][ulUARTBufferEnd[ulComNumber]], (void *)chrBuffer, ulLen1);
			}
			if (ulLen2 > 0)
			{
				memcpy((void *)&chrUARTBuffers[ulComNumber][0], (void *)(chrBuffer + ulLen1), ulLen2);
			}
			ulUARTBufferEndTemp = ulLen2;
		}
		else
		{
			memcpy((void *)&chrUARTBuffers[ulComNumber][ulUARTBufferEnd[ulComNumber]], (void *)chrBuffer, uLen);
			ulUARTBufferEndTemp += uLen;
		}

		if (ulUARTBufferEndTemp == ulUARTBufferStart[ulComNumber])
		{
			printf("Error!");
		}
		else
		{
			ulUARTBufferEnd[ulComNumber] = ulUARTBufferEndTemp;
		}

#ifdef SYNCHRONOUS_MODE
		SetEvent(hReceiveEvent[ucComNumber]);
#endif

	}
	return 0;
}


signed char CCA::OpenCOMDevice(const unsigned long ulPortNo, const unsigned long ulBaundrate)
{
	DWORD dwThreadID, dwThreadParam;
	COMSTAT Comstat;
	DWORD dwErrorFlags;
	DWORD dwRes;
	DCB dcb;
	COMMTIMEOUTS comTimeOut;
	TCHAR PortName[10] = { '\\','\\','.','\\','C','O','M',0,0,0 };//"\\\\.\\COM";
	TCHAR chrTemple[5] = { 0 };

	if (ulPortNo >= TOTAL_PORT_NUM)
	{
		printf("\nerror: exceed the max com port num\n");
		return -1;
	}

	_itot(ulPortNo + START_PORT_NUM, chrTemple, 10);
	_tcscat(PortName, chrTemple);

	if ((hComDev[ulPortNo] = CreateFile(PortName, GENERIC_READ | GENERIC_WRITE, 0, NULL, OPEN_EXISTING, FILE_FLAG_OVERLAPPED, NULL)) == INVALID_HANDLE_VALUE)
	{
		dwRes = GetLastError();
		return -1;
	}
	ulComMask |= 1 << ulPortNo;

	SetupComm(hComDev[ulPortNo], iBufferSize, iBufferSize);
	GetCommState(hComDev[ulPortNo], &dcb);
	dcb.BaudRate = ulBaundrate;
	dcb.fParity = NOPARITY;
	dcb.ByteSize = 8;
	dcb.fDtrControl = 1;//DTR = 0;接收
	dcb.fRtsControl = 0;//RTS = 0;接收
	dcb.StopBits = ONESTOPBIT;

	SetCommState(hComDev[ulPortNo], &dcb);
	ClearCommError(hComDev[ulPortNo], &dwErrorFlags, &Comstat);
	dwRes = GetLastError();

	comTimeOut.ReadIntervalTimeout = 5;
	comTimeOut.ReadTotalTimeoutMultiplier = 10;
	comTimeOut.ReadTotalTimeoutConstant = 100;
	comTimeOut.WriteTotalTimeoutMultiplier = 5;
	comTimeOut.WriteTotalTimeoutConstant = 5;
	SetCommTimeouts(hComDev[ulPortNo], &comTimeOut);

	stcWriteStatus[ulPortNo].hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
	stcReadStatus[ulPortNo].hEvent = CreateEvent(NULL, TRUE, FALSE, NULL);
	stcReadStatus[ulPortNo].Internal = 0;
	stcReadStatus[ulPortNo].InternalHigh = 0;
	stcReadStatus[ulPortNo].Offset = 0;
	stcReadStatus[ulPortNo].OffsetHigh = 0;
	dwThreadParam = ulPortNo;
	hCOMThread[dwThreadParam] = CreateThread(NULL, 0, (LPTHREAD_START_ROUTINE)ReceiveCOMData, &dwThreadParam, 0, &dwThreadID);
	SetThreadPriority(hCOMThread[ulPortNo], THREAD_PRIORITY_NORMAL);
	Sleep(200);
	return 0;
}


void CCA::CloseCOMDevice()
{
	unsigned char i;
	for (i = 0; i < sizeof(ulComMask) * 8; i++)
	{
		if ((ulComMask & (1 << i)) == 0)
			continue;
		ulUARTBufferEnd[i] = 0; ulUARTBufferStart[i] = 0;
		TerminateThread(hCOMThread[i], 0);
		WaitForSingleObject(hCOMThread[i], 10000);
		PurgeComm(hComDev[i], PURGE_TXABORT | PURGE_RXABORT | PURGE_TXCLEAR | PURGE_RXCLEAR);
		CloseHandle(stcReadStatus[i].hEvent);
		CloseHandle(stcWriteStatus[i].hEvent);
		CloseHandle(hComDev[i]);
	}
	ulComMask = 0;
}

.cpp文件中甚至不需要有export字眼的出現
注意：在項目屬性中，需要把生成改成.dll。

dll的調用

對類封裝好後的dll調用包括兩部分:
1.相關文件的放置
2.代碼書寫

1.相關文件放置

將編譯好的dll放入sln存在的x64文件夾中
將lib放入源代碼所在的lib文件夾中（沒有就自己新建一個）
.h文件放在源代碼所在的include文件夾中（沒有新建）

2.調用代碼

.h文件如下

#pragma once
#ifndef __COMANGLE_H__
#define __COMANGLE_H__


#include "windows.h"
#include <stdio.h>
#include <tchar.h>

//#ifdef _WIN32
//#ifdef CCA_API         //這個在哪裏定義了？
#define CCA_API __declspec(dllexport)
//#else
//#define CCA_API __declspec(dllimport)
//#endif
//#else
//#define CCA_API __attribute__ ((visibility("default")))
//#endif

#ifndef JY901_h
#define JY901_h

#define SAVE 			0x00
#define CALSW 		0x01
#define RSW 			0x02
#define RRATE			0x03
#define BAUD 			0x04
#define AXOFFSET	0x05
#define AYOFFSET	0x06
#define AZOFFSET	0x07
#define GXOFFSET	0x08
#define GYOFFSET	0x09
#define GZOFFSET	0x0a
#define HXOFFSET	0x0b
#define HYOFFSET	0x0c
#define HZOFFSET	0x0d
#define D0MODE		0x0e
#define D1MODE		0x0f
#define D2MODE		0x10
#define D3MODE		0x11
#define D0PWMH		0x12
#define D1PWMH		0x13
#define D2PWMH		0x14
#define D3PWMH		0x15
#define D0PWMT		0x16
#define D1PWMT		0x17
#define D2PWMT		0x18
#define D3PWMT		0x19
#define IICADDR		0x1a
#define LEDOFF 		0x1b
#define GPSBAUD		0x1c

#define YYMM				0x30
#define DDHH				0x31
#define MMSS				0x32
#define MS					0x33
#define AX					0x34
#define AY					0x35
#define AZ					0x36
#define GX					0x37
#define GY					0x38
#define GZ					0x39
#define HX					0x3a
#define HY					0x3b
#define HZ					0x3c			
#define Roll				0x3d
#define Pitch				0x3e
#define Yaw					0x3f
#define TEMP				0x40
#define D0Status		0x41
#define D1Status		0x42
#define D2Status		0x43
#define D3Status		0x44
#define PressureL		0x45
#define PressureH		0x46
#define HeightL			0x47
#define HeightH			0x48
#define LonL				0x49
#define LonH				0x4a
#define LatL				0x4b
#define LatH				0x4c
#define GPSHeight   0x4d
#define GPSYAW      0x4e
#define GPSVL				0x4f
#define GPSVH				0x50

#define DIO_MODE_AIN 0
#define DIO_MODE_DIN 1
#define DIO_MODE_DOH 2
#define DIO_MODE_DOL 3
#define DIO_MODE_DOPWM 4
#define DIO_MODE_GPS 5		


#define		TOTAL_PORT_NUM		65
#define		START_PORT_NUM		0

#define		iBufferSize 250
#define     UARTBufferLength 2000
#undef  SYNCHRONOUS_MODE


struct STime
{
	unsigned char ucYear;
	unsigned char ucMonth;
	unsigned char ucDay;
	unsigned char ucHour;
	unsigned char ucMinute;
	unsigned char ucSecond;
	unsigned short usMiliSecond;
};
struct SAcc
{
	short a[3];
	short T;
};
struct SGyro
{
	short w[3];
	short T;
};
struct SAngle
{
	short Angle[3];
	short T;
};
struct SMag
{
	short h[3];
	short T;
};
struct SDStatus
{
	short sDStatus[4];
};
struct SPress
{
	long lPressure;
	long lAltitude;
};
struct SLonLat
{
	long lLon;
	long lLat;
};
struct SGPSV
{
	short sGPSHeight;
	short sGPSYaw;
	long lGPSVelocity;
};
class CCA_API CCA
{
public:
	struct STime		stcTime;
	struct SAcc 		stcAcc;
	struct SGyro 		stcGyro;
	struct SAngle 		stcAngle;
	struct SMag 		stcMag;
	struct SDStatus 	stcDStatus;
	struct SPress 		stcPress;
	struct SLonLat 		stcLonLat;
	struct SGPSV 		stcGPSV;

	//static成員變量須在類外定義


	static HANDLE		 hComDev[TOTAL_PORT_NUM];
	static unsigned long long ulComMask;
	static HANDLE		 hCOMThread[TOTAL_PORT_NUM];
	static OVERLAPPED	 stcWriteStatus[TOTAL_PORT_NUM];
	static OVERLAPPED	 stcReadStatus[TOTAL_PORT_NUM];

	static volatile char chrUARTBuffers[TOTAL_PORT_NUM][UARTBufferLength];
	static volatile unsigned long ulUARTBufferStart[TOTAL_PORT_NUM];
	static volatile unsigned long ulUARTBufferEnd[UARTBufferLength];

	static char chrUARTBufferOutput[1000];

	CCA();/*{}*/

	void CopeSerialData(unsigned short usLength);
	signed char	SendUARTMessageLength(const unsigned long ulChannelNo, const char chrMessage[], const unsigned short usLen);
	unsigned short CollectUARTData(const unsigned long ulChannelNo);
	signed char SetBaundrate(const unsigned long ulPortNo, const unsigned long ulBaundrate);
	signed char OpenCOMDevice(const unsigned long ulPortNo, const unsigned long ulBaundrate);
	void CloseCOMDevice(void);
	static DWORD WINAPI ReceiveCOMData(PVOID pParam);

	~CCA();/* {}*/
};
extern CCA ComAngle;
#endif

#endif

.cpp文件夾

#include <iostream>
#include "time.h"
#include "windows.h"
#include ".\include\ComAngle.h"

#pragma comment(lib,"./lib/AngleDetectionV4.lib")



int main()
{
	CCA Ccom_angle;
	unsigned long ulBaund = 9600; unsigned long ulComNo = 4;
	char chrBuffer[2000];
	unsigned short usLength = 0, usCnt = 0;
	signed char cResult = 1;

	while (cResult != 0)
	{
		cResult = Ccom_angle.OpenCOMDevice(ulComNo, ulBaund);
	}



	while (1)
	{

		usLength = Ccom_angle.CollectUARTData(ulComNo);
		if (usLength > 0)
		{
			//算法解析
			Ccom_angle.CopeSerialData(usLength);
		}
		Sleep(100);
		if (usCnt++ >= 0)
		{
			usCnt = 0;
			float x = (float)Ccom_angle.stcAngle.Angle[0] / 32768 * 180;
			float y = (float)Ccom_angle.stcAngle.Angle[1] / 32768 * 180;
			float z = (float)Ccom_angle.stcAngle.Angle[2] / 32768 * 180;

			std::cout << x << "    " << y << "    " << z << "    " << std::endl;
		}

	}
}

以上就是整個類封裝成dll並調用的全過程，中間編譯的一些錯誤，需要對症下藥。預處理器，包含文件，#ifdef等都需要知道是幹嘛的。相關坑點也在代碼中有註釋。

C++動態庫dll生成及調用總結

類的封裝

dll的調用

1.相關文件放置

2.調用代碼

【C#】代碼整理備忘——1

基於對比度的金字塔融合

opencv找出圖像最亮點並畫圓

C++動態庫dll生成及調用總結

【C++編程及IDE】opencv的配置（非一勞永逸版）及老版本的去除

https://yachay.unat.edu.pe/blog/index.php?comment_area=format_blog&comment_component=blog&comment_co

linux以太網驅動總結