Question

I have a small problem during debugging my App in VS 2010 RC when I want to see all the elements of std::map container.

When debugger reaches the breakpoint and I want to check the values of the map in element inspector (in Locals windows and in pop-up windows after hovering the variable name with mouse as well) and I m scrolling down the list of the elements it stops on the 100 element and I can t next elements. The map contains more than 200 elements (map s counter parameter shows this properly) but I can t view them all in the element inspector.

The problem appears even in the most simple std::map<int, int> filled with 200 int values.

Maybe this is a problem with settings, but I ve tried many combinations of them and it still does not work. Maybe somebody have some ideas how to solve this.

Thank you in advance for your help.

Answer 1

The display of such information is directed by the autoexp.dat file (usually located in "Program Files*""Microsoft Visual Studio*"Common7PackagesDebugger). It seems that Microsoft added a hard coded limitation of 100 elements to the #tree operator, in order to avoid freezing Visual Studio in case of loops in the tree.

Answer 2

With VS 2010 SP1 this limit was increased to a default value of 2000 entries. This can also be modified by setting a registry key (all the standard warnings about modifying the registry apply here):

for x86: HKEY_LOCAL_MACHINESOFTWAREMicrosoftVisualStudio10.0NativeDEVisualizerMaxChildren
for x64: HKEY_LOCAL_MACHINESOFTWAREWow6432NodeMicrosoftVisualStudio10.0NativeDEVisualizerMaxChildren

Scot Brennecke, Escalation Engineer Microsoft VC++ Support

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