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Number of active/alive items in the pool (for display purpose)

A conformant backend should return NULL on failure (e.g. clipboard data is not text).

You should never need those functions. Always use GetCursorScreenPos() and GetContentRegionAvail()! They are bizarre local-coordinates which don't pla

Internal state access - if you want to share Dear ImGui state between modules (e.g. DLL) or allocate it yourself Note that we still point to some stat

Tab Bars

Tables: Internals

User generally sees positions in window coordinates. Internally we store CursorPos in absolute screen coordinates because it is more convenient. Conve

RENAMED in 1.92.0

Pass this to your backend rendering function! Valid after Render() and until the next call to NewFrame()

Get current font size (= height in pixels) of current font, with global scale factors applied. - Use style.FontSizeBase to get value before global sca

Helper to avoid a common series of PushOverrideID -> GetID() -> PopID() call (note that when using this pattern, ID Stack Tool will tend to not displa

Basic Accessors

Return untranslated names: on macOS, Cmd key will show as Ctrl, Ctrl key will show as super. Lifetime of return value: valid until next call to same f

Return 2D vector representing the combination of four cardinal direction, with analog value support (for e.g. ImGuiKey_GamepadLStick* values).

Return value representing the number of presses in the last time period, for the given repeat rate (most often returns 0 or 1. The result is generally

Get desired mouse cursor shape. Important: this is meant to be used by a platform backend, it is reset in ImGui::NewFrame(), updated during the frame,

Return the delta from the initial clicking position while the mouse button is clicked or was just released. This is locked and return 0.0f until the m

NB: prefer to call right after BeginPopup(). At the time Selectable/MenuItem is activated, the popup is already closed!

GetNextSelectedItem() is an abstraction allowing us to change our underlying actual storage system without impacting user. (e.g. store unselected vs c

Note that this is used for popups, which can overlap the non work-area of individual viewports.

Iterate selection with 'void* it = NULL; ImGuiID id; while (selection.GetNextSelectedItem(&it, &id)) { ... }'