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DirectInput Structures

This section contains information about the structures used with DirectInput.

The memory for all Microsoft DirectX structures must be initialized to 0 before use. In addition, all structures that contain a dwSize member should set the member to the size of the structure, in bytes, before use. The following example performs these tasks on a common structure, DIDEVCAPS:
DIDEVCAPS didevcaps; // Can't use this yet

ZeroMemory(&didevcaps, sizeof(didevcaps));
didevcaps.dwSize = sizeof(didevcaps);

// Now the structure Can be used.

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