#include "..\include_eapi_header.h"
inline double ChangeUnit(double srval, int src, int target)
{
	double result;
	if (src == target)
	{
		result = srval;
	}
	else
	{
		result = 0.0;
		switch (src)
		{
		case 2:
			if (target)
			{
				if (target == 1)
				{
					result = srval * 0.0394;
				}
				else if (target == 3)
				{
					result = srval * 0.1;
				}
			}
			else
			{
				result = srval * 2.8368;
			}
			break;
		case 3:
			if (target)
			{
				if (target == 1)
				{
					result = srval * 0.394;
				}
				else if (target == 2)
				{
					result = srval * 10.0;
				}
			}
			else
			{
				result = srval * 28.368;
			}
			break;
		case 1:
			if (target)
			{
				if (target == 2)
				{
					result = srval * 25.38071065989848;
				}
				else if (target == 3)
				{
					result = srval * 2.538071065989848;
				}
			}
			else
			{
				result = srval * 72.0;
			}
			break;
		case 0:
			switch (target)
			{
			case 1:
				result = srval * 0.01388888888888889;
				break;
			case 2:
				result = srval * 0.3525098702763678;
				break;
			case 3:
				result = srval * 0.03525098702763678;
				break;
			}
			break;
		default:
			return result;
		}
	}
	return result;
}
// 调用格式: SDT_DOUBLE 屏幕单位转换, 命令说明: NULL
// 参数<1>: 源单位值 SDT_DOUBLE, 参数说明: "屏幕显示区域的宽度,单位为像素点。"
// 参数<2>: [源单位 SDT_INT], 参数说明: "单位类型,为以下常量值之一:0、#接口常量.像素;1、#接口常量.英寸;2、#接口常量.毫米;3、#接口常量.厘米。"
// 参数<3>: [目的单位 SDT_INT], 参数说明: "单位类型,为以下常量值之一:0、#接口常量.像素;1、#接口常量.英寸;2、#接口常量.毫米;3、#接口常量.厘米。"
EAPI_EXTERN_C void eapi_ChangeUnit_70_eapi(PMDATA_INF pRetData, INT nArgCount, PMDATA_INF pArgInf)
{
	int lp = 0, wp = 2;
	if (pArgInf[1].m_dtDataType && pArgInf[1].m_dtDataType >= 0 && pArgInf[1].m_dtDataType <= 3)
	{
		lp = pArgInf[1].m_int;
	}
	if (pArgInf[2].m_dtDataType && pArgInf[2].m_dtDataType >= 0 && pArgInf[2].m_dtDataType <= 3)
	{
		wp = pArgInf[2].m_int;
	}
	pRetData->m_double = ChangeUnit(pArgInf[0].m_int, lp, wp);
}