return 1 if the sum is valid, 0 on overflow. negative terms are considered invalid.

@OPTIMIZE: provide an option that always forces left-predict or paeth predict

* Exchanges the contents of the map with those of @p other * * @param other the map to exchange contents with */

Computes upper 64 bits of multiplication of two 64-bit unsigned integers.

At it is common to do an AddCustomRect() followed by a GetCustomRect(), we provide an optional 'ImFontAtlasRect* out_r = NULL' argument to retrieve th

Queue a mouse wheel event (some mouse/API may only have a Y component)

TODO: Thickness anti-aliased lines cap are missing their AA fringe. We avoid using the ImVec2 math operators here to reduce cost to a minimum for debu

Layer is locked for the root window, however child windows may use a different viewport (e.g. extruding menu)

Call on the initial click.

The point of this indirection is to not be inlined in debug mode in order to not bloat inner loop.b

For quicker full rebuild of a storage (instead of an incremental one), you may add all your contents and then sort once.

Radix-4 decimation-in-time FFT butterfly. This version assumes that elements of the butterfly are in different vectors, so that each vector in the inp

[DEBUG] Compute mask of inputs with the same codepoint.

Clear current keyboard/gamepad state + current frame text input buffer. Equivalent to releasing all keys/buttons.

清空消息 支持混合消息类型

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