Apply mapobjects in C # (layer callout)

Object applies mapobjects in C # (layer callout)
Summary: Mapobjects CSharp. NET

Author: Yang Yutin Blue_Bat@126.Com



In MO automatic annotation needs to use the Labelrenderer object, the general annotation process needs to set a suitable font, below gives the code which I implements.



Implementation code:

Works well for point layers

Get the layer that needs to be annotated

Mapobjects2.maplayer Lyr = (mapobjects2.maplayer) axMap1.Layers.Item (0);//I use the world map, 0 floors for the city

Mapobjects2.labelrenderer lb = new Mapobjects2.labelrendererclass ();//Create Callout Object

Lb. field = "Name";//Automatically callout fields from the source. The layer I added to the map is ESRI sharpfiles format, this ' name ' is the field name in the DBF file

Mapobjects2.textsymbol sym = lb.get_symbol (0);//define SYM to set the font

Sym. Font.Name = "Song body";//Set Font

Sym. Font.Bold = false;//Bold display

Sym. color = (UINT) mapobjects2.colorconstants.mored;//Set callout text colors

Sym. Font.Size = 10;//※ Set Font size

Sym. Height = 5000;

Lb. AllowDuplicates = true;//Allow duplicates

Lyr. Renderer = lb;//A set of annotations to the current layer



The method set above will not change the font size with the zoom of the map, and the utility is higher. Of course, we can also set the callout to zoom in with the map, by logging off the code sym above. Font.Size = 10;//※ Set Font size

and cancel the following code

Sym. Height = 5000;

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