一个关于C++中动态链接库的问题
下面是小弟写的POS打印机动态链接库程序，第一次写，感觉也写的不对，请问各位高手能不能帮看一下，该如何修改，同时给点写动态库的建议，非常感谢#include<iostream.h>
#include <vcl.h>
#include <windows.h>
#pragma hdrstop
#pragma argsused
#ifdef DLL_H
extern "C"__declspec (dllexport)HANDLE POS_Open(
LPCTSTR lpName,
int nComBaudrate,
int nComDataBits,
int nComStopBits,
int nComParity,
int nParam);
extern "C"__declspec (dllexport)HANDLE POS_Open(
LPCTSTR lpName,
int nComBaudrate,
int nComDataBits,
int nComStopBits,
int nComParity,
int nParam);
extern "C"__declspec (dllexport)int POS_Close(void);
extern "C"__declspec (dllexport)int POS_Reset(void);
extern "C"__declspec (dllexport)int POS_SetMode(int nPrintMode);
extern "C"__declspec (dllexport)int POS_SetMotionUnit(int nHorizontalMU,int nVerticalMU );
extern "C"__declspec (dllexport)int POS_SetCharSetAndCodePage(int nCharSet,int nCodePage);
extern "C"__declspec (dllexport)int POS_FeedLine(void);
extern "C"__declspec (dllexport)int POS_SetLineSpacing(int nDistance);
extern "C"__declspec (dllexport)int POS_SetRightSpacing(int nDistance);
extern "C"__declspec (dllexport)int POS_PreDownloadBmpToRAM(char *pszPath,int nID);
extern "C"__declspec (dllexport)int POS_PreDownloadBmpsToFlash(char* pszPaths[],int nCount);
extern "C"__declspec (dllexport)int POS_RTQueryStatus(char *pszStatus);
extern "C"__declspec (dllexport)int POS_QueryStatus(char *pszStatus,int nTimeouts);
extern "C"__declspec (dllexport)int POS_NETQueryStatus(char *ipAddress,char *pszStatus);
extern "C"__declspec (dllexport)int POS_KickOutDrawer(int nID,int nOnTimes,int nOffTimes);
extern "C"__declspec (dllexport)int POS_CutPaper(int nMode,int nDistance);
extern "C"__declspec (dllexport)bool POS_StartDoc();
extern "C"__declspec (dllexport)bool POS_EndDoc();
extern "C"__declspec (dllexport)void POS_BeginSaveFile(LPCTSTR lpFileName,bool bToPrinter);
extern "C"__declspec (dllexport)void POS_EndSaveFile();
extern "C"__declspec (dllexport)int POS_S_SetAreaWidth(int nWidth);
extern "C"__declspec (dllexport)int POS_S_TextOut(
char *pszString,
int nOrgx,
int nWidthTimes,
int nHeightTimes,
int nFontType,
int nFontStyle);
extern "C"__declspec (dllexport)int POS_S_DownloadAndPrintBmp(char *pszPath,int nOrgx,int nMode);
extern "C"__declspec (dllexport)int POS_S_PrintBmpInRAM(int nID,int nOrgx,int nMode);
extern "C"__declspec (dllexport)int POS_S_PrintBmpInFlash(int nID,int nOrgx,int nMode);
extern "C"__declspec (dllexport)int POS_S_SetBarcode(
char *pszInfoBuffer,
int nOrgx,
int nType,
int nWidthX,
int nHeight,
int nHriFontType,
int nHriFontPosition,
int nBytesToPrint);
extern "C"__declspec (dllexport)int POS_PL_SetArea(int nOrgx,int nOrgy,int nWidth,int nHeight,int nDirection);
extern "C"__declspec (dllexport)int POS_PL_TextOut(
char *pszString,
int nOrgx,
int nOrgy,
int nWidthTimes,
int nHeightTimes,
int nFontType,
int nFontStyle);
extern "C"__declspec (dllexport)int POS_PL_DownloadAndPrintBmp(char *pszPath,int nOrgx,int nOrgy,int nMode);
extern "C"__declspec (dllexport)int POS_PL_PrintBmpInRAM(int nID,int nOrgx,int nOrgy,int nMode);
extern "C"__declspec (dllexport)int POS_PL_SetBarcode(
char *pszInfoBuffer,
int nOrgx,
int nOrgy,
int nType,
int nWidthX,
int nHeight,
int nHriFontType,
int nHriFontPosition,
int nBytesToPrint );
extern "C"__declspec (dllexport)int POS_PL_Print(void);
extern "C"__declspec (dllexport)int POS_PL_Clear(void);
extern "C"__declspec (dllexport)int POS_WriteFile(HANDLE hPort,char *pszData,int nBytesToWrite);
extern "C"__declspec (dllexport)int POS_ReadFile(HANDLE hPort,char *pszData,int nBytesToRead,int nTimeouts);
extern "C"__declspec (dllexport)HANDLE POS_SetHandle(HANDLE hNewHandle);
extern "C"__declspec (dllexport)int POS_GetVersionInfo(int *pnMajor,int *pnMinor);
#endif /* Not BUILDING_DLL */
BOOL WINAPI DllMain(HINSTANCE hinstDLL, DWORD fwdreason, LPVOID lpvReserved)
{
switch (fwdreason)
{
case DLL_PROCESS_ATTACH:
break;
case DLL_PROCESS_DETACH:
break;
case DLL_THREAD_ATTACH:
break;
case DLL_THREAD_DETACH:
break;
}
return 1;
}
//---------------------------------------------------------------------------
#include <iostream.h>
using namespace std;
#pragma hdrstop
#pragma argsused
#define POS_SUCCESS 1001
#define POS_FAIL 1002
#define POS_ERROR_INVALID_HANDLE 1101
#define POS_ERROR_INVALID_PARAMETER 1102
#define POS_ERROR_NOT_BITMAP 1103
#define POS_ERROR_NOT_MONO_BITMAP 1104
#define POS_ERROR_BEYONG_AREA 1105
#define POS_ERROR_INVALID_PATH 1106
#define hinstDLL 1
#if BUILDING_DLL
#define DLLEXPORT __declspec (dllexport)
#else /* Not BUILDING_DLL */
#define DLLEXPORT __declspec (dllimport)
#endif /* _DLL_H_ */
class DLLEXPORT DllClass
{
public:
DllClass();
virtual ~DllClass(void);
//打开端口，建立与打印机的通信连接
HANDLE POS_Open(
LPCTSTR lpName,
int nComBaudrate,
int nComDataBits,
int nComStopBits,
int nComParity,
int nParam)
{
nComStopBits>=5&&nComStopBits<=8;
switch(nComBaudrate){
case 1200:case 2400:case 4800:case 9600:case 14400:case 19200:case 38400:case 56000:case 57600:
cout<<"波特率"<<'\n';
}
//指定串口通讯时数据停止位
switch(nComStopBits){
case 0x00:
cout<<"停止位为1"<<'\n';break;
case 0x01:
cout<<"停止位为1.5"<<'\n'; break;
case 0x02:
cout<<"停止位为2"<<'\n'; break;
}
//指定串口的奇偶校验方法
switch(nComParity){
case 0x00:
cout<<"无校验"<<'\n';break;
case 0x01:
cout<<"奇校验"<<'\n';break;
case 0x02:
cout<<"偶校验"<<'\n';break;
case 0x03:
cout<<"标记校验"<<'\n';break;
case 0x04:
cout<<"空格校验"<<'\n';break;
}
//指定串口的流控制（握手）方式、或表示通讯方式
switch(nParam){
case 0x00:
cout<<"流控制为DTR/DST"<<'\n';break;
case 0x01:
cout<<"流控制为RTS/CTS"<<'\n';break;
case 0x02:
cout<<"流控制为XON/OFF"<<'\n';break;
case 0x03:
cout<<"无握手"<<'\n';break;
case 0x12:
cout<<"打开并口通讯端口"<<'\n';
nComBaudrate=0;
nComDataBits=0;
nComStopBits=0;
nComParity=0;
break;
case 0x13:
cout<<"打开USB通讯端口"<<'\n';break;
case 0x14:
cout<<"打开打印机驱动程序"<<'\n';break;
case 0x15:
cout<<"打开网络接口"<<'\n';break;}
if(lpName)
return INVALID_HANDLE_VALUE;
return hinstDLL;//该函数调用成功，返回一个已经打开的端口句柄；如果函数调用失败，返回值为 INVALID_HANDLE_VALUE （-1）
}
//关闭串口
int POS_Close(void)
{
return 1;
}
//复位打印机
int POS_Reset(void)
{
return POS_SUCCESS;
}
//设置打印机的打印模式以及出纸模式
int POS_SetMode(int nPrintMode)
{
switch(nPrintMode){
case 0x00:
cout<<"标准模式（行模式）"<<'\n';break;
case 0x01:
cout<<"页模式"<<'\n';break;
case 0x02:
cout<<"黑标记标签模式"<<'\n';break;
case 0x03:
cout<<"白标记标签模式"<<'\n';break;
}
if(nPrintMode>=0x00&&nPrintMode<=0x03)
return POS_SUCCESS;
else return POS_FAIL;//如果函数成功，则返回值为 POS_SUCCESS。如果函数失败，则返回值为以下值之一：POS_FAIL,POS_ERROR_INVALID_HANDLE,POS_ERROR_INVALID_PARAMETER
}
//设置打印机的水平和垂直方向的移动单位
int POS_SetMotionUnit(int nHorizontalMU,int nVerticalMU )
{
nHorizontalMU>=0&&nHorizontalMU<=255;
nVerticalMU>=0&&nVerticalMU<=255;
return POS_SUCCESS;//如果函数成功，则返回值为 POS_SUCCESS。如果函数失败，则返回值为以下值之一：POS_FAIL,POS_ERROR_INVALID_HANDLE,POS_ERROR_INVALID_PARAMETER
}
//设置字符集和代码页
int POS_SetCharSetAndCodePage(int nCharSet,int nCodePage)
{
switch(nCharSet){
case 0x00:
cout<<"U.S.A"<<'\n';break;
case 0x01:
cout<<"France"<<'\n';break;
case 0x02:
cout<<"Germany"<<'\n';break;
case 0x03:
cout<<"U.K."<<'\n';break;
case 0x04:
cout<<"DenmarkI"<<'\n';break;
case 0x05:
cout<<"Sweden"<<'\n';break;
case 0x06:
cout<<"Italy"<<'\n';break;
case 0x07:
cout<<"Spain I"<<'\n';break;
case 0x08:
cout<<"Japan"<<'\n';break;
case 0x09:
cout<<"Nonway"<<'\n';break;
case 0x0A:
cout<<"Denmark II"<<'\n';break;
case 0x0B:
cout<<"Spain II"<<'\n';break;
case 0x0C:
cout<<"Latin America"<<'\n';break;
case 0x0D:
cout<<"Korea"<<'\n'; break;
}
switch(nCodePage){
case 0x00:
cout<<"PC437 [U.S.A. Standard Europe]"<<'\n';break;
case 0x01:
cout<<"Reserved"<<'\n';break;
case 0x02:
cout<<"PC850 [Multilingual]"<<'\n';break;
case 0x03:
cout<<"PC860 [Portuguese]"<<'\n';break;
case 0x04:
cout<<"PC863 [Canadian-French]"<<'\n';break;
case 0x05:
cout<<"PC865 [Nordic]"<<'\n';break;
case 0x12:
cout<<"PC852"<<'\n';break;
case 0x13:
cout<<"PC858"<<'\n';break;
}
return POS_SUCCESS;//如果函数成功，则返回值为 POS_SUCCESS。如果函数失败，则返回值为以下值之一：POS_FAIL,POS_ERROR_INVALID_HANDLE,POS_ERROR_INVALID_PARAMETER
}
//打印机向前走纸
int POS_FeedLine(void)
{
return POS_SUCCESS;//如果函数成功，则返回值为 POS_SUCCESS。如果函数失败，则返回值为以下值之一：POS_FAIL,POS_ERROR_INVALID_HANDLE
}
//设置字符行高
int POS_SetLineSpacing(int nDistance)
{
nDistance>=0&&nDistance<=255;
return POS_SUCCESS;//如果函数成功，则返回值为 POS_SUCCESS。如果函数失败，则返回值为以下值之一：POS_FAIL,POS_ERROR_INVALID_HANDLE,POS_ERROR_INVALID_PARAMETER
}
//设置字符右间距
int POS_SetRightSpacing(int nDistance)
{
nDistance>=0&&nDistance<=255;
return POS_SUCCESS;//如果函数成功，则返回值为 POS_SUCCESS。如果函数失败，则返回值为以下值之一：POS_FAIL,POS_ERROR_INVALID_HANDLE,POS_ERROR_INVALID_PARAMETER
}
//预下载一幅位图到打印机的 RAM 中，同时指定此位图的 ID 号
int POS_PreDownloadBmpToRAM(char *pszPath,int nID)
{
nID>=0&&nID<=7;
return POS_SUCCESS;//如果函数成功，则返回值为 POS_SUCCESS。如果函数失败，则返回值为以下值之一：POS_FAIL,POS_ERROR_INVALID_HANDLE,POS_ERROR_INVALID_PARAMETER
}
//预下载一幅或若干幅位图到打印机的 Flash 中
int POS_PreDownloadBmpsToFlash(char* pszPaths[],int nCount)
{
nCount>=1&&nCount<=255;
return POS_SUCCESS;//如果函数成功，则返回值为 POS_SUCCESS。如果函数失败，则返回值为以下值之一：POS_FAIL,POS_ERROR_INVALID_HANDLE,POS_ERROR_INVALID_PARAMETER
}
//通过串口查询当前打印机的状态，此函数式非实时的
int POS_QueryStatus(char *pszStatus,int nTimeouts)
{
pszStatus=(char*)malloc(1);
nTimeouts=2;
return POS_SUCCESS;//如果函数成功，则返回值为 POS_SUCCESS。如果函数失败，则返回值为以下值之一：POS_FAIL,POS_ERROR_INVALID_HANDLE
}
//通过串口返回打印机当前的状态，此函数为实时的
int POS_RTQueryStatus(char *pszStatus)
{
pszStatus=(char*)malloc(1);
return POS_SUCCESS;//如果函数成功，则返回值为 POS_SUCCESS。如果函数失败，则返回值为以下值之一：POS_FAIL,POS_ERROR_INVALID_HANDLE
}
//查询网络设备状态
int POS_NETQueryStatus(char *ipAddress,char *pszStatus)
{
pszStatus=(char*)malloc(1);
return POS_SUCCESS;//如果函数成功，则返回值为 POS_SUCCESS。如果函数失败，则返回值为以下值之一：POS_FAIL,POS_ERROR_INVALID_HANDLE
}
//打开钱箱
int POS_KickOutDrawer(int nID,int nOnTimes,int nOffTimes)
{
switch(nID){
case 0x00:
cout<<"钱箱连接引脚2"<<'\n';break;
case 0x01:
cout<<"钱箱连接引脚2"<<'\n';break;
}
nOnTimes>=1&&nOnTimes<=255;
nOnTimes=nOnTimes*2;
nOffTimes>=1&&nOffTimes<=255;
nOffTimes=nOffTimes*2;
if(nOffTimes<nOnTimes)
nOffTimes=nOnTimes*2;
return POS_SUCCESS;//如果函数成功，则返回值为 POS_SUCCESS。如果函数失败，则返回值为以下值之一：POS_FAIL,POS_ERROR_INVALID_HANDLE,POS_ERROR_INVALID_PARAMETER
}
//切纸
int POS_CutPaper(int nMode,int nDistance)
{
switch(nMode){
case 0x00:
cout<<"全切"<<'\n';break;
case 0x01:
cout<<"半切"<<'\n';break;
}
nDistance>=0&&nDistance<=255;//如果函数成功，则返回值为 POS_SUCCESS。如果函数失败，则返回值为以下值之一：POS_FAIL,POS_ERROR_INVALID_HANDLE,POS_ERROR_INVALID_PARAMETER
//开始一个打印作业
bool POS_StartDoc();
{
return true;//如果函数成功，为TRUE；否则为FALSE
}
//结束一个打印作业
bool POS_EndDoc()//如果函数成功，为TRUE；否则为FALSE
//将数据写入文件
void POS_BeginSaveFile(LPCTSTR lpFileName,bool bToPrinter)
{
return;
}
//结束返回文件操作
void POS_EndSaveFile()
{
return;
}
//标准模式打印函数
//设置标准模式下的打印区域宽度
int POS_S_SetAreaWidth(int nWidth)
{
nWidth>=0&&nWidth<=65535;
return POS_SUCCESS;
}
//打印文本
int POS_S_TextOut(
char *pszString,
int nOrgx,
int nWidthTimes,
int nHeightTimes,
int nFontType,
int nFontStyle)
{
char ia[];
char *pszString=ia;
nOrgx>=0&&nOrgx<=65535;
nWidthTimes>=1&&nWidthTimes<=6;
nHeightTimes>=1&&<=6;
switch(nFontType){
case 0x00:
cout<<"标准 ASCII"<<'\n';break;
case 0x01:
cout<<"压缩 ASCII"<<'\n';break;
case 0x02:
cout<<"用户自定义字符"<<'\n';break;
case 0x03:
cout<<"标准 “宋体”"<<'\n';break;}
switch(nFontStyle){
case 0x00:
cout<<"正常"<<'\n';break;
case 0x08:
cout<<"加粗"<<'\n';break;
case 0x80:
cout<<"1点粗的下划线"<<'\n';break;
case 0x100:
cout<<"2点粗的下划线"<<'\n';break;
case 0x200:
cout<<"倒置（只在行首有效）"<<'\n';break;
case 0x400:
cout<<"反显（黑底白字）"<<'\n';break;
case 0x800:
cout<<"平滑处理（用于放大时"<<'\n';break;
case 0x1000:
cout<<"每个字符顺时针旋转 90 度"<<'\n';break;
}
return POS_SUCCESS;
}
//下载并立即打印位图
int POS_S_DownloadAndPrintBmp(char *pszPath,int nOrgx,int nMode)
{
nOrgx>=0&&nOrgx<=65535;
switch(nMode){
case 0x00:
return POS_BITMAP_MODE_8SINGLE_DENSITY;break;
case 0x01:
return POS_BITMAP_MODE_8DOUBLE_DENSITY;break;
case 0x20:
return POS_BITMAP_MODE_24SINGLE_DENSITY;break;
case 0x21:
return POS_BITMAP_MODE_24DOUBLE_DENSITY;break;
}
return POS_SUCCESS;
}
//打印已经下载到RAM中的位图
int POS_S_PrintBmpInRAM(int nID,int nOrgx,int nMode)
{
nID>=0&&nID<=7;
nOrgx>=0&&nOrgx<=65535;
switch(nMode){
case 0x00:
return POS_BITMAP_PRINT_NORMAL;break;
case 0x01:
return POS_BITMAP_PRINT_DOUBLE_WIDTH;break;
case 0x02:
return POS_BITMAP_PRINT_DOUBLE_HEIGHT;break;
case 0x03:
return POS_BITMAP_PRINT_QUADRUPLE;break;
}
return POS_SUCCESS;
}
//打印已经下载到flash中的位图
int POS_S_PrintBmpInFlash(int nID,int nOrgx,int nMode)
{
nID>=1&&nID<=255;
nOrgx>=0&&nOrgx<=65535;
switch(nMode){
case 0x00:
return POS_BITMAP_PRINT_NORMAL;break;
case 0x01:
return POS_BITMAP_PRINT_DOUBLE_WIDTH;break;
case 0x02:
return POS_BITMAP_PRINT_DOUBLE_HEIGHT;break;
case 0x03:
return POS_BITMAP_PRINT_QUADRUPLE;break;
}
return POS_SUCCESS;
}
//设置并打印条码
int POS_S_SetBarcode(
char *pszInfoBuffer,
int nOrgx,
int nType,
int nWidthX,
int nHeight,
int nHriFontType,
int nHriFontPosition,
int nBytesToPrint)
{
nOrgx>=0&&nOrgx<=65535;
switch(nType){
case 0x41:
return POS_BARCODE_TYPE_UPC_A;break;
case 0x42:
return POS_BARCODE_TYPE_UPC_E;break;
case 0x43:
return POS_BARCODE_TYPE_JAN13;break;
case 0x44:
return POS_BARCODE_TYPE_JAN8;break;
case 0x45:
return POS_BARCODE_TYPE_CODE39;break;
case 0x46:
return POS_BARCODE_TYPE_ITF;break;
case 0x47:
return POS_BARCODE_TYPE_CODEBAR;break;
case 0x48:
return POS_BARCODE_TYPE_CODE93;break;
case 0x49:
return POS_BARCODE_TYPE_CODE128;break;
}
nWidthX>=2&&nWidthX<=6;
nHeight>=1&&nHeight<=255;
if(nHeight=null)
nHeight=162;
switch(nHriFontType){
case 0x00:
return POS_FONT_TYPE_STANDARD;break;
case 0x01:
return POS_FONT_TYPE_COMPRESSED;break;
}
switch(nHriFontPosition){
case 0x01:
return POS_HRI_POSITION_NONE;break;
case 0x02:
return POS_HRI_POSITION_ABOVE; break;
case 0x03:
return POS_HRI_POSITION_BELOW;break;
case 0x04:
return POS_HRI_POSITION_BOTH;break;
}
return POS_SUCCESS;
}
//只支持页面打印模式或标签打印模式下的打印函数
//设置页面的打印区域
int POS_PL_SetArea(int nOrgx,int nOrgy,int nWidth,int nHeight,int nDirection)
{
nOrgx>=0&&nOrgx<=65535;
nOrgy>=0&&nOrgy<=65535;
nWidth>=0&&nWidth<=65535;
nHeight>=0&&nHeight<=65535;
switch(nDirection){
case 0:
return POS_AREA_LEFT_TO_RIGHT;break;
case 1:
return POS_AREA_BOTTOM_TO_TOP;break;
case 2:
return POS_AREA_RIGHT_TO_LEFT;break;
case 3:
return POS_AREA_TOP_TO_BOTTOM;break;
}
return POS_SUCCESS;
}
//打印文本
int POS_PL_TextOut(
char *pszString,
int nOrgx,
int nOrgy,
int nWidthTimes,
int nHeightTimes,
int nFontType,
int nFontStyle)
{
nOrgx>=0&&nOrgx<=65535;
nOrgy>=0&&nOrgy<=65535;
nWidthTimes>=1&&nWidthTimes<=6;
nHeightTimes>=1&&nHeightTimes<=6;
switch(nFontType){
case 0x00:
return POS_FONT_TYPE_STANDARD;break;
case 0x01:
return POS_FONT_TYPE_COMPRESSED;break;
case 0x02:
return POS_FONT_TYPE_UDC; break;
case 0x03:
return POS_FONT_TYPE_CHINESE;break;
}
switch(nFontStyl){
case 0x00:
return POS_FONT_STYLE_NORMAL;break;
case 0x08:
return POS_FONT_STYLE_BOLD;break;
case 0x80:
return POS_FONT_STYLE_THIN_UNDERLINE;break;
case 0x100:
return POS_FONT_STYLE_THICK_UNDERLINE;break;
case 0x400:
return POS_FONT_STYLE_REVERSE;break;
case 0x800:
return POS_FONT_STYLE_SMOOTH;break;
}
return POS_SUCCESS;
}
//下载并立即打印位图
int POS_PL_DownloadAndPrintBmp(char *pszPath,int nOrgx,int nOrgy,int nMode)
{
nOrgx>=0&&nOrgx<=65535;
nOrgy>=0&&nOrgy<=65535;
switch(nMode){
case 0x00:
return POS_BITMAP_MODE_8SINGLE_DENSITY;break;
case 0x01:
return POS_BITMAP_MODE_8DOUBLE_DENSITY;break;
case 0x20:
return POS_BITMAP_MODE_24SINGLE_DENSITY;break;
case 0x21:
return POS_BITMAP_MODE_24DOUBLE_DENSITY;break;
}
return POS_SUCCESS;
}
//打印已经下载到RAM中的位图
int POS_PL_PrintBmpInRAM(int nID,int nOrgx,int nOrgy,int nMode)
{
nID>=0&&nID<=7;
nOrgx>=0&&nOrgx<=65535;
nOrgy>=0&&nOrgy<=65535;
switch(nMode){
case 0x00:
return POS_BITMAP_PRINT_NORMAL;break;
case 0x01:
return POS_BITMAP_PRINT_DOUBLE_WIDTH;break;
case 0x02:
return POS_BITMAP_PRINT_DOUBLE_HEIGHT;break;
case 0x03:
return POS_BITMAP_PRINT_QUADRUPLE;break;
}
return POS_SUCCESS;
}
//设置条码
int POS_PL_SetBarcode(
char *pszInfoBuffer,
int nOrgx,
int nOrgy,
int nType,
int nWidthX,
int nHeight,
int nHriFontType,
int nHriFontPosition,
int nBytesToPrint )
{
nOrgx>=0&&nOrgx<=65535;
nOrgy>=0&&nOrgy<=65535;
switch(nType){
case 0x41:
return POS_BARCODE_TYPE_UPC_A;
case 0x42:
return POS_BARCODE_TYPE_UPC_E;
case 0x43:
return POS_BARCODE_TYPE_JAN13;
case 0x44:
return POS_BARCODE_TYPE_JAN8;
case 0x45:
return POS_BARCODE_TYPE_CODE39;
case 0x46:
return POS_BARCODE_TYPE_ITF;
case 0x47:
return POS_BARCODE_TYPE_CODEBAR;
case 0x48:
return POS_BARCODE_TYPE_CODE93;
case 0x49:
return POS_BARCODE_TYPE_CODE128;
}
nHeight>=1&&nHeight<=255;
if(nHriFontType=0x00)
return POS_FONT_TYPE_STANDARD;
else
if(nHriFontType=0x01)
return POS_FONT_TYPE_COMPRESSED;
switch(nHriFontPosition){
case 0x00:
return POS_HRI_POSITION_NONE;
case 0x01:
return POS_HRI_POSITION_ABOVE;
case 0x02:
return POS_HRI_POSITION_BELOW;
case 0x03:
return POS_HRI_POSITION_BOTH;
}
return POS_SUCCESS;
}
//打印页或标签缓冲区中的数据
int POS_PL_Print(void)
{
return POS_SUCCESS;
}
//清除票面和标签的打印缓冲区中的数据
int POS_PL_Clear(void)
{
return POS_SUCCESS;
}
//杂项，主主要用于调试和自定义控制函数使用
//往端口或文件写数据
int POS_WriteFile(HANDLE hPort,char *pszData,int nBytesToWrite)
{
return POS_SUCCESS;
}
//从端口或文件读数据
int POS_ReadFile(HANDLE hPort,char *pszData,int nBytesToRead,int nTimeouts)
{
return POS_SUCCESS;
}
//设置端口或文件的句柄
HANDLE POS_SetHandle(HANDLE hNewHandle)
{
return POS_SUCCESS;
}
//获取 dll 的版本信息
int POS_GetVersionInfo(int *pnMajor,int *pnMinor)
{
}
private:
;};
