SoContextHandler - Online Linux Manual PageSection : 3
Updated : Mon Jan 25 2021
Source : Version 4.0.0
Note : Coin

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NAMESoContextHandler − The SoContextHandler class is for now to be treated as an internal class​.

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SYNOPSIS
#include <Inventor/misc/SoContextHandler​.h>

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Public Typestypedef void ContextDestructionCB(uint32_t contextid, void *userdata)

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Static Public Member Functionsstatic void destructingContext (uint32_t contextid)
static void addContextDestructionCallback (ContextDestructionCB *func, void *closure)
static void removeContextDestructionCallback (ContextDestructionCB *func, void *closure)

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Detailed DescriptionThe SoContextHandler class is for now to be treated as an internal class​. Since Coin 2​.0

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Member Function Documentation

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void SoContextHandler::destructingContext (uint32_t contextid) [static]This method must be called by client code which destructs a context, to guarantee that there are no memory leaks upon context destruction​. This will take care of correctly freeing context-bound resources, like OpenGL texture objects and display lists​. Before calling this function, the context must be made current​. Note that if you are using one of the standard GUI-binding libraries from Kongsberg Oil & Gas Technologies, this is taken care of automatically for contexts for canvases set up by SoQt, SoWin, etc​.

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void SoContextHandler::addContextDestructionCallback (ContextDestructionCB * func, void * closure) [static]Add a callback which will be called every time a GL context is destructed​. The callback should delete all GL resources tied to that context​. All nodes/classes that allocate GL resources should set up a callback like this​. Add the callback in the constructor of the node/class, and remove it in the destructor​. See also removeContextDestructionCallback()

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void SoContextHandler::removeContextDestructionCallback (ContextDestructionCB * func, void * closure) [static]Remove a context destruction callback​. See also addContextDestructionCallback()

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AuthorGenerated automatically by Doxygen for Coin from the source code​. 0

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Johanes Gumabo

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