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

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

Id needs to be < 0x10000 to register a rectangle to map into a specific font.

Same value as passed to the old io.RenderDrawListsFn function. Valid after Render() and until the next call to NewFrame()

References are only valid until a new value is added to the storage. Calling a Set***() function or a Get***Ref() function invalidates the pointer.

Basic Accessors

NB: This is only valid if IsMousePosValid(). Back-ends in theory should always keep mouse position valid when dragging even outside the client window.

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

Top-left

Horizontal distance preceding label when using TreeNode() or Bullet()

In window space (not screen space!)

Store 1-bit per Unicode code point (0=unused, 1=used)

FIXME: Add a more explicit sort order in the window structure.

we already uses our own ImFloor() { return (float)(int)v } internally so the standard one wrapper is named differently (it's used by stb_truetype)

Functions

If you want to create ImDrawList instances, pass them ImGui::GetDrawListSharedData() or create and use your own ImDrawListSharedData (so you can use I

items_count: Use -1 to ignore (you can call Begin later). Use INT_MAX if you don't know how many items you have (in which case the cursor won't be ad

Helpers for internal use