[求助]：请问如何删除或修改一个标注？

saintlzh

如题。

把图1的标注（dim1）改为其他的字符譬如图2（new dim）

saintlzh

图2

binbin

yuning

saintlzh

楼上的，这个我也知道，我想领用程序来修改，如何实现呢？

chxmhsd

打开标注实体后用
Acad::ErrorStatus
setDimensionText(

    const char* text);

text        Input text string to use for dimension

This function sets the dimension to use a copy of text as the user-supplied dimension annotation text string. This string will need to contain any desired multiline text formatting characters.
This function returns a copy of the user-supplied dimension annotation text string (including any multiline text formatting characters).
If the default text is the only text in the dimension, provide this function with an empty string (for example, 灯). If the dimension contains user-defined text along with the defualt text, provide this function with the default text denoted with angle brackets (for example, 典his is the default text <>&#12539;. If the dimension contains no text, for example using the &#12539;&#12539;syntax), provide the &#12539;&#12539; Finally if the text is user defined, but there is no default text, provide only the user-defined text to this function.

To set the dimension to use only the default text in the block table record, call this function with text==NULL. Then when the dimension is closed, the dimension text string will be set to an empty string and the default text will be used.
The annotation text string is used for DXF group code 1.
This function returns Acad::eOk.

获取text用
char*

dimensionText() const;

This function returns a copy of the user-supplied dimension annotation text string (including any multiline text formatting characters).
If the default text is the only text in the dimension, this function will return an empty string (for example, 灯). If the dimension contains user-defined text along with the defualt text, this function will return the text with the default text denoted with angle brackets (for example, 典his is the default text <>&#12539;. If the dimension contains no text, for example using the &#12539;&#12539;syntax), it will return the &#12539;&#12539; Finally, if the text is user defined but there is no default text, only the user-defined text is returned.

Call AcDbDimension::measurement() to obtain the default measurement and computed text.
Alternately, to identify the substring in the block table record is, you can look at the AcDbText entity within the block table record (the object ID for this block table record can be obtained via AcDbDimension::dimBlockId()).
The caller of this function is responsible for deallocating the memory used by the returned text string using the C++ delete[] operator.

The annotation text string is used for DXF group code 1.

saintlzh

谢谢楼上的，不过我如何才能获得一个标注实体呢？