设置MTEXT实体的背景MASK和颜色

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In LISP, we can add group code 90 and set it as 1 to turn on the background mask. If we want to use a different color than the one used last time we can add group code 63 such as (63 . 1) - RED color - as well. We can turn off the mask by removing group code 90 and all related ones such as 63, 45, 441 and 421 (if applicable). A small tip here, we can substitute the original sub list of group code 90 with (90 . 2) to turn the mask off successfully and do not need to care about other related group codes. The following LISP code demonstrates how to do so:

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Here is some information about the DXF group codes related to Background Mask of MTEXT entities.

** Group code 90: Bit flags for background Mask

The possible values can be:

        kFillTextBox            = 0x1
        kFillTextBoxBackground  = 0x2
        kUseWordBreak           = 0x4
        kCheckedForUseWordBreak = 0x8

In the Background Mask dialog UI (while in the text editor or double click on the text --> right click context menu -->  [Background Mask..]), we can check the 'Use background mask' option to set the kFillTextBox bit and 'Use drawing background color' option in the 'Fill Color' group to set the kFillTextBoxBackground bit. In ARX API, We can use AcDbMText::backgroundFillOn() AcDbMText::setBackgroundFill() to get and set the kFillTextBoxBackground bit.

** Group code 63:  Fill Color

Specifies the color for the background. If it is a true color, Group code 63 gives the ACI color value and the corresponding Group code 421 gives the AcCmColor’s value.

We can specify the background color of the MTEXT in the Background Mask dialog UI. In ARX API, we can use AcDbMText::getBackgroundFillColor and AcDbMText::setBackgroundFillColor to get and read the value.

** Group code 45:  Border Offset Factor

Specifies the margin around the text for the opaque background. The value is based on the text height. A factor of 1.0 exactly fits the multiline text object. A factor of 1.5 extends the background by 0.5 times the text height.

In the Background Mask dialog UI, we can specify it in the 'Border offset factor' field. In ARX API, We can use AcDbMText::getBackgroundScaleFactor and AcDbMText::setBackgroundScaleFactor to get and set the value.

** Group code 441: Transparency color.

The corresponding data member is of AcCmTransparency Type. This can not be controlled by the Background Mask dialog UI. But we can get or set this value using AcDbMText::getBackgroundTransparency and AcDbMText::setBackgroundTransparency methods.

/db_自贡黄明儒_

这个要赞！！！

lucas3

每日一码, 赞！！！

lucas3

要是翻译一下就更好啦

Free-Lancer

lucas3 发表于 2014-12-9 08:49
要是翻译一下就更好啦

记住关键字就可以可，BackgroundFill 背景开关

object.BackgroundFill

Object   MText  The object this property applies to.

BackgroundFill  Boolean; read-write

透明度（441） 是高版本下才实现的！

819534890

不错不错，赞一个

dnbcgrass

回复看看:lol

lucas3

Free-Lancer 发表于 2014-12-9 09:06
记住关键字就可以可，BackgroundFill 背景开关
object.BackgroundFill Object   MText  The object this ...

嗯，谢谢大师，好久不见！

wzg356

看不懂但看到想法也可以

aihuyujian

支持一I行啊 来看看楼

qyming1996

学习遮罩功能

nbboy

赞一个瞧瞧

天若有情007

             学习学习

lzhguan

学习一下，一直没有找到vba控制边界偏移因子的代码。看看这儿有没有

ljxkm

不错，谢谢大师分享