CAD如何直接打印，不出现打印对话框？

主要用到函数说明：

MxDrawXCustomFunction::Mx_Print

直接打印，不出现打印对话框，详细说明如下：

参数	说明
double ptLBx	打印的范围左下角x
double ptLBy	打印的范围左下角y
double ptRTx	打印的范围右上角x
double ptRTy	打印的范围右上角y
LPCTSTR pszPrintName	打印机名，如果传为空，取系统默认打印机
LPCTSTR pszPaperName	打印的图纸名,如果传为空，取系统默认打印机设置
LONG iPrintDirection	打印的方向，2 为横向，1为纵向,默认取1
LONG iLeftMargin	打印的页边的左边距离,如果为-1,取打印机默认的页边距
LONG iRightMargin	打印的页边的右边距离,如果为-1,取打印机默认的页边距
LONG iTopMargin	打印的页边的上边距离,如果为-1,取打印机默认的页边距
LONG iBottomMargin	打印的页边的下边距离,如果为-1,取打印机默认的页边距
LPCTSTR pszLayoutName	打印的布局,为NULL就是模型Model中的内容
LPCTSTR pszPrintConfig	打印配制，暂没有使用
LPCTSTR pszDocName	打印的文档名称，在用pdf虚拟打印机时，指定打印的pdf文件的缺省文件名
LONG lIsPrintLineWdith	是否打印线宽，默认值为1,表示打印，传0表示不打印
iFlag	pRectPageMargin参数的含义,iFlag = 0表示页边距，iFlag = 1表示打印区域矩形框位置

js代码实现如下：

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function  myprint()             {                 var axMxDrawX = document.getElementById("MxDrawXCtrl");                 var viewBound  = axMxDrawX.Call("Mx_GetViewCoord","");                   var printParam =  axMxDrawX.Call("Mx_NewResbuf","");                                 // 打印范围取当前视区显示内容                                 printParam.AddDouble(viewBound.AtDouble(1));                 printParam.AddDouble(viewBound.AtDouble(2));                 printParam.AddDouble(viewBound.AtDouble(3));                 printParam.AddDouble(viewBound.AtDouble(4));                    var jpgWidth = viewBound.AtDouble(3) - viewBound.AtDouble(1);                 var jpgHeight = viewBound.AtDouble(4) - viewBound.AtDouble(2);                                 // 把jpg的宽度，高度，求文档坐标变成象素宽高.                 //var jpgWidth = axMxDrawX.CallDoubleParam1("Mx_DocLongToViewCoord",jpgWidth);                 // jpgWidth = jpgWidth.AtLong(1);                 //var jpgHeight = axMxDrawX.CallDoubleParam1("Mx_DocLongToViewCoord",jpgHeight);                 //jpgHeight = jpgHeight.AtLong(1);                   var printWidth = 50;                 var printHeight = 50;                                 if(jpgWidth > 1)                     printHeight = printWidth * jpgHeight / jpgWidth;                                     // 打印机名，取空就取系统默认的。                                     printParam.AddString("");                                     // 图纸名,取空就取系统默认的                                     printParam.AddString("");                                     // 打印的方向，2 为横向，1为纵向,默认取1                 printParam.AddLong(1);                                 // 打印区域的左上角X坐标，图纸单为mm                 printParam.AddLong(50);                                 // 打印区域的右下角X坐标，图纸单为mm                 printParam.AddLong(50 + printWidth );                                 // 打印区域的左上角Y坐标，图纸单为mm                 printParam.AddLong(50);                                 // 打印区域的右下角Y坐标，图纸单为mm                 printParam.AddLong(50 + printHeight);                                 // 打印的布局,为NULL就是模型Model中的内容                 printParam.AddString("");                                 // 打印配制，暂没有使用                 printParam.AddString("");                                 // 打印的文档名称，在用pdf虚拟打印机时，指定打印的pdf文件的缺省文件名                 printParam.AddString("");                                 // 前面打印参数说明:iFlag = 0表示页边距，iFlag = 1表示打印区域矩形框位置                printParam.AddLong(1);                // 开始打印                var ret = axMxDrawX.CallEx("Mx_Print",printParam);                if(ret.AtString(0) == "Ok")                     alert("打印成功");             }