In Visual Studio you can define custom keywords:
usertype.dat next to the devenv.exe
Example content:
Vec3
Vec4
Rectangle
etc...
One line one word, so simple.
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Now about the visualizers
You have to place visualizer files under:
c:\Users\YourName\Documents\Visual Studio 2013\Visualizers\
e.g.:
example.natvis
To enable natvis debugger
Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\VisualStudio\12.0_Config\Debugger]
"EnableNatvisDiagnostics"=dword:00000001
Later I will describe it.
Example:
<?xml version="1.0" encoding="utf-8"?>
<AutoVisualizer xmlns="http://schemas.microsoft.com/vstudio/debugger/natvis/2010">
<Type Name="Rectangle">
<DisplayString>A rectangle with height = {height} {width} </DisplayString>
<Expand>
<Item Name="height">height</Item>
<Item Name="width">width</Item>
<Item Name="area">height * width</Item>
<Item Name="macik">macik</Item>
<ExpandedItem>macik</ExpandedItem>
<Synthetic Name="Am I a square?" Condition="height==width">
<DisplayString>Yes I am. </DisplayString>
</Synthetic>
<Synthetic Name="Am I a square?" Condition="height!=width">
<DisplayString>No I am not.</DisplayString>
</Synthetic>
</Expand>
</Type>
<Type Name="Rectangle2">
<DisplayString Condition="height == 4">negy = {height} {width} </DisplayString>
<DisplayString Condition="height == 3">harom</DisplayString>
<Expand>
<Item Name="height">height</Item>
<Item Name="width">width</Item>
<Item Name="area">height * width</Item>
</Expand>
</Type>
<Type Name="std::vector<*>">
<Expand>
<Item Name="[size]">_Mylast - _Myfirst</Item>
<!-- <Item Name="[capacity]">(_Myend - _Myfirst)</Item>-->
<ArrayItems>
<Size>_Mylast - _Myfirst</Size>
<ValuePointer>_Myfirst</ValuePointer>
</ArrayItems>
</Expand>
</Type>
</AutoVisualizer>
