C# 引用C++动态库方法

标准形式：

[DllImport("KSJApi.dll")]
        public static extern int KSJ_PreviewSetPos( int nChannel, IntPtr hWnd, int x, int y, int nWidth, int nHeight  );

例子：

using System;

using System.Runtime.InteropServices;
using System.Text;

/// <summary>
/// 2010.07.25 还有些简单函数没有列出，客户可参考例程自己加入
/// </summary>
namespace KSJCamera
{
public class KSJApiB
{
public enum KSJ_DEVICETYPE
{
KSJ_UC130C_MRNN = 0,
KSJ_UC130M_MRNN,
KSJ_UC200C_MRNN,
KSJ_UC320C_MRNN,
KSJ_UC130C_MRYN,
KSJ_UC130M_MRYN,
KSJ_UC200C_MRYN,
KSJ_UC320C_MRYN,
KSJ_UC500C_MRNN,
KSJ_UC500M_MRNN,
KSJ_UC500C_MRYN,
KSJ_UC500M_MRYN,
KSJ_UC320C_OCR,
KSJ_UC900C_MRNN,
KSJ_UC1000C_MRNN,
KSJ_UC900C_MRYN,
KSJ_UC1000C_MRYN,
KSJ_UC130C_MRYY,
KSJ_UC130M_MRYY,
KSJ_UD140C_SRNN,
KSJ_UD140M_SRNN,
KSJ_UC36C_MGNN,
KSJ_UC36M_MGNN,
KSJ_UC36C_MGYN,
KSJ_UC36M_MGYN,
KSJ_UC900C_MRYY,
KSJ_UC1000C_MRYY,
};
public enum KSJ_ADDRESSMODE 
{ 
KSJ_SKIPNONE = 0, 
KSJ_SKIP2, 
KSJ_SKIP3, 
KSJ_SKIP4, 
KSJ_SKIP8 
};

// 相机参数
public enum KSJ_PARAM
{
KSJ_EXPOSURE = 0,
KSJ_RED,
KSJ_GREEN,
KSJ_BLUE,
KSJ_GAMMA,
KSJ_PREVIEW_COLUMNSTART,
KSJ_PREVIEW_ROWSTART,
KSJ_CAPTURE_COLUMNSTART,
KSJ_CAPTURE_ROWSTART,
KSJ_HORIZONTALBLANK,
KSJ_VERTICALBLANK,
KSJ_FLIP,
KSJ_BIN,
KSJ_MIRROR,
KSJ_CONTRAST,
KSJ_BRIGHTNESS,
KSJ_VGAGAIN,
KSJ_CLAMPLEVEL,
KSJ_CDSGAIN,
KSJ_RED_SHIFT,
KSJ_GREEN_SHIFT,
KSJ_BLUE_SHIFT,
KSJ_COMPANDING
};
public enum KSJ_PREVIEWMODE { PM_RAWDATA, PM_RGBDATA };
// 枚举类型贝耶尔模式
public enum KSJ_BAYERMODE
{
KSJ_BGGR_BGR24 = 0, KSJ_GRBG_BGR24, KSJ_RGGB_BGR24, KSJ_GBRG_BGR24, KSJ_BGGR_BGR24_FLIP, KSJ_GRBG_BGR24_FLIP, KSJ_RGGB_BGR24_FLIP, KSJ_GBRG_BGR24_FLIP,
KSJ_BGGR_BGR32, KSJ_GRBG_BGR32, KSJ_RGGB_BGR32, KSJ_GBRG_BGR32, KSJ_BGGR_BGR32_FLIP, KSJ_GRBG_BGR32_FLIP, KSJ_RGGB_BGR32_FLIP, KSJ_GBRG_BGR32_FLIP,
KSJ_BGGR_GRAY8, KSJ_GRBG_GRAY8, KSJ_RGGB_GRAY8, KSJ_GBRG_GRAY8, KSJ_BGGR_GRAY8_FLIP, KSJ_GRBG_GRAY8_FLIP, KSJ_RGGB_GRAY8_FLIP, KSJ_GBRG_GRAY8_FLIP
};
public enum KSJ_TRIGGERMODE
{
KSJ_TRIGGER_INTERNAL = 0, KSJ_TRIGGER_EXTERNAL
};
public enum KSJ_TRIGGERSTATUS 
{ 
KSJ_NO=0, 
KSJ_HAVE 
};
public enum KSJ_ReturnCode
{
RET_SUCCESS=1,
RET_PARAMERROR=     -1, // User's Parameter Passed to API Error.
RET_MALLOCFAIL=     -2, // Memory Allocated Fail.
RET_NOTSUPPORT=     -3, // Function not supported by such type camera.
RET_DEVICENOTEXIST=4, // Device doesn't be detected.
RET_DEVICENOTINIT=     -5, // Device haven't be initialized
RET_VIOLATION=     -6, // This operation is conflict to other operation.
RET_NOPRIVILEGE=     -7, // User no privilege
RET_FAIL=     -8, // Function Return Failed.( Normal Error, no Detail )
RET_WRONG    =     -9, // Same to RET_FAIL.
RET_RECOVERY_SUCCESS = -10, // Device is recovered successfully.
RET_RECOVERY_FAIL = -11, // Device recovered, but fail.
RET_BADFRAME = -12, // Bad Frame comes from sensor, should be skipped. 
RET_INVALIDFRAME = -13, // Invalid Frame, Transmission Error, this frame should re-get.
RET_ZEROFRAME = -14, // 帧存相机会返回此值，表示采集图像数据0字节，错误的帧
RET_VERSION_ERROR = -15 // 版本错误
};
public enum KSJ_COLORCORRECT 
{ KSJ_CC_NONE=0, 
KSJ_CC_SHIFTRGB, 
KSJ_CC_EQRGB, 
KSJ_CC_EQALL, 
KSJ_CC_WB 
};
// 通过函数返回值可以得到执行信息
[DllImport("KSJApi.dll")]
public static extern int KSJ_GetErrorInfo(int nErrorNo, IntPtr pszErrorInfo);
// 初始化动态库，必须调用
[DllImport("KSJApi.dll")]
public static extern int KSJ_Init();
[DllImport("KSJApi.dll")]
public static extern int KSJ_UnInit();
// 得到接入设备数目
[DllImport("KSJApi.dll")]
public static extern int KSJ_DeviceGetCount( );
// 得到设备信息（型号，序号，固件版本号）
[DllImport("KSJApi.dll")]
public static extern int KSJ_DeviceGetInformation(int nChannel, ref int pDeviceType, ref int pnIndex, ref ushort pwFirmwareVersion);
// 设置采集视场大小
[DllImport("KSJApi.dll")]
public static extern int KSJ_CaptureSetFieldOfView( int nChannel, int nColumnStart, int nRowStart, int nColumnSize, int nRowSize, KSJ_ADDRESSMODE ColumnAddressMode, KSJ_ADDRESSMODE RowAddressMode );
// 获取采集视场的实际大小
[DllImport("KSJApi.dll")]
public static extern int KSJ_CaptureGetFieldOfView( int nChannel, ref int pnColumnStart, ref int pnRowStart,ref int pnColumnSize, ref int pnRowSize,ref KSJ_ADDRESSMODE pColumnAddressMode,ref KSJ_ADDRESSMODE pRowAddressMode );
[DllImport("KSJApi.dll")]
public static extern int KSJ_PreviewSetMode( int nChannel, KSJ_PREVIEWMODE PreviewMode );
// 获取预览模式
[DllImport("KSJApi.dll")]
public static extern int KSJ_PreviewGetMode( int nChannel, ref KSJ_PREVIEWMODE PreviewMode );

[DllImport("KSJApi.dll")]
public static extern int KSJ_PreviewGetDefaultMode( int nChannel, ref KSJ_PREVIEWMODE PreviewMode );

// 得到采集图像的宽度和高度（单位：像素）
[DllImport("KSJApi.dll")]
public static extern int KSJ_CaptureGetSize(int nChannel, ref int pnWidth, ref int pnHeight);
// 得到采集图像的宽度和高度（单位：像素）及图像比特位数
[DllImport("KSJApi.dll")]
public static extern int KSJ_CaptureGetSizeEx( int nChannel, ref int pnWidth, ref int pnHeight, ref int pnBitCount);
[DllImport("KSJApi.dll")]
public static extern int KSJ_CaptureRgbData( int nChannel, byte [] pRgbData );

// 获得参数的设置范围
[DllImport("KSJApi.dll")]
public static extern int KSJ_GetParamRange( int nChannel, KSJ_PARAM Param, ref int pnMinValue, ref int pnMaxValue );
// 设置参数
[DllImport("KSJApi.dll")]
public static extern int KSJ_SetParam ( int nChannel, KSJ_PARAM Param, int nValue );
// 获取参数当前值
[DllImport("KSJApi.dll")]
public static extern int KSJ_GetParam ( int nChannel, KSJ_PARAM Param, ref int pnValue );

// 设置Bayer模式，同时影响采集和预览，这个函数除特殊需要调用，否则用户不需调用此功能。
[DllImport("KSJApi.dll")]
public static extern int KSJ_BayerSetMode( int nChannel, KSJ_BAYERMODE BayerMode );
// 获得当前Bayer模式
[DllImport("KSJApi.dll")]
public static extern int KSJ_BayerGetMode(int nChannel, ref KSJ_BAYERMODE pBayerMode);

// 设置Gamma值，范围 -9 - +9
[DllImport("KSJApi.dll")]
public static extern int KSJ_GammaSetValue( int nChannel, int nValue );
// 打开或关闭Gamma校正，即影响预览又影响采集
[DllImport("KSJApi.dll")]
public static extern int KSJ_GammaOn(int nChannel, bool bOn);

// 设置自动白平衡区域
[DllImport("KSJApi.dll")]
public static extern int KSJ_AWBSetRegion( int nChannel, int nX, int nY, int nW, int nH );
// 自动白平衡回调函数
public delegate void KSJ_AWBCALLBACK( bool bSuccess, int nRValue, int nGValue, int nBValue, IntPtr lpContext );

// 定义自动白平衡（操作硬件）操作结束后的回调函数，当自动曝光结束时，KSJ开发包会自动调用AECallback用户指定的回调函数
[DllImport("KSJApi.dll")]
public static extern int KSJ_AWBSetCallback(int nChannel, KSJ_AWBCALLBACK fpAWBCallback, IntPtr lpContext);
// 开始或终止自动白平衡调节
[DllImport("KSJApi.dll")]
public static extern int KSJ_AWBStart( int nChannel, bool bStart, int nMaxCount, int nRTarget, int nGTarget, int nBTarget );

// 定义委托类型
// 自动曝光回调函数
public delegate void KSJ_AECALLBACK( bool bSuccess, int nResult, IntPtr lpContext );

// 设置自动曝光的区域，这个区域是相对预览图像的左上角像素位置
[DllImport("KSJApi.dll")]
public static extern int KSJ_AESetRegion(int nChannel, int nX, int nY, int nW, int nH);

// 定义自动曝光操作结束后的回调函数，当自动曝光结束时，KSJ开发包会自动调用AECallback用户指定的回调函数
[DllImport("KSJApi.dll")]
public static extern int KSJ_AESetCallback(int nChannel, KSJ_AECALLBACK pfAECallback, IntPtr lpContext);

// 开始或终止自动曝光调节
[DllImport("KSJApi.dll")]
public static extern int KSJ_AEStart(int nChannel, bool bStart, int nMaxCount, int nTarget);

[DllImport("KSJApi.dll")]
public static extern int KSJ_RecordStart( int nChannel, bool bStart, float fRecordRate,string pFileName );

[DllImport("KSJApi.dll")]
public static extern int KSJ_RecordStatusGet( int nChannel, ref bool bStart );
// 设置外部触发
[DllImport("KSJApi.dll")]
public static extern int KSJ_TriggerModeSet(int nChannel, KSJApiB.KSJ_TRIGGERMODE mode);
[DllImport("KSJApi.dll")]
public static extern int KSJ_TriggerModeGet(int nChannel, ref KSJApiB.KSJ_TRIGGERMODE mode);

// KSJ_NO表示没有图像可以供主机读取，KSJ_HAVE表示有一帧图像可以供主机读取，用户可以调用KSJ_CaptureRgbData等采集函数来读取。
[DllImport("KSJApi.dll")]
public static extern int KSJ_TriggerStatusGet(int nChannel,ref KSJ_TRIGGERSTATUS TriggerStatus);
[DllImport("KSJApi.dll")]
public static extern int KSJ_EmptyFrameBuffer(int nChannel);

// 保存为Bmp文件
[DllImport("KSJApi.dll")]
public static extern int KSJ_HelperSaveToBmp( byte [] pData, int nWidth, int nHeight, int nBitCount, string pszFileName );
// 保存为Jpg文件
[DllImport("KSJApi.dll")]
public static extern int KSJ_HelperSaveToJpg( byte [] pData, int nWidth, int nHeight, int nBitCount, int nQulity, string pszFileName );

[DllImport("KSJApi.dll")]
public static extern int KSJ_CaptureSetTimeOut(int nChannel, ref ulong dwTimeOut );

[DllImport("KSJApi.dll")]
public static extern int KSJ_CaptureGetTimeOut(int nChannel, ref ulong dwTimeOut );

[DllImport("KSJApi.dll")]
public static extern int KSJ_ColorCorrectSet( int nChannel, KSJ_COLORCORRECT ColorCorrect, int nRTarget, int nGTarget, int nBTarget );
[DllImport("KSJApi.dll")]
public static extern int KSJ_ColorCorrectGet(int nChannel, ref KSJ_COLORCORRECT ColorCorrect );
[DllImport("KSJApi.dll")]
public static extern int KSJ_ProcessContrastSet(int nChannel, int nContrast);
[DllImport("KSJApi.dll")]
public static extern int KSJ_ProcessContrastGet(int nChannel, ref int nContrast);
[DllImport("KSJApi.dll")]
public static extern int KSJ_ProcessBrightnessSet(int nChannel, int nBrightness);
[DllImport("KSJApi.dll")]
public static extern int KSJ_ProcessBrightnessGet(int nChannel, ref int nBrightness);
}
public class KSJApiC
{
public delegate void KSJ_PREVIEWCALLBACK(byte[] pImageData, int nWidth, int nHeight, int nBitCount, IntPtr lpContext);
[DllImport("KSJApi.dll")]
public static extern int KSJ_PreviewSetPos( int nChannel, IntPtr hWnd, int x, int y, int nWidth, int nHeight );
[DllImport("KSJApi.dll")]
public static extern int KSJ_PreviewStart( int nChannel, bool bStart );
[DllImport("KSJApi.dll")]
public static extern int KSJ_PreviewSetCallback( int nChannel, KSJ_PREVIEWCALLBACK PreviewCallback, IntPtr lpContext ); 
[DllImport("KSJApi.dll")]
public static extern int KSJ_PreviewGetFrameRate(int nChannel, ref float fFrameRate);
[DllImport("KSJApi.dll")]
public static extern int KSJ_PreviewPause(int nChannel, bool bPause);
}
}