v0.9.1

• Add a LuaCATS definition file for IDE language servers (in the Releases page on GitHub)
• Clarify error messages occurring during font loading are font-related [p=2776476]
• Differentiate between integer/number in the documented Lua signatures
• Document CollapsingHeader's and Selectable's p_* parameters as optional
• Fix assertion failure when setting an empty drag/drop payload
• Fix incorrect values of ModFlags_{Alt,Shift,Super} in 0.8 shims
• Prevent stuck keys when keyboard capture is released from an action's global shortcut key [p=2765259]
• Remove ReaImGui_Hello World.eel from the ReaPack package
• Update to dear imgui v1.90.6 (release notes)

C++ bindings:

• Annotate Begin* and Create* functions as [[nodiscard]]
• Fix all pointer parameters being effectively optional

gfx2imgui:

• Clamp excessively large requested font sizes [p=2781729]

API changes:

• Add StyleVar_TableAngledHeadersTextAlign
• Add TreeNodeFlags_SpanTextWidth
• ProgressBar accepts negative 'fraction' values for indeterminate mode

v0.9.0.2

• Fix 0.9 not switching the active font texture to the current DPI in dockers
• Fix 0.9 shims letting through unknown virtual key codes and asserting
• macOS: fix incorrect clipping in the Metal renderer if the clip rect's origin is smaller than the window's position
• Windows: repair drag-docking over floating dockers

v0.9.0.1

• Hotfix: repair v0.9 crashing when docking on Windows

v0.9

• Add an action to open the HTML documentation
• Add a setting to disable hardware acceleration [p=2763726]
• Add saving and restoring UI state in REAPER screensets
• Document the minimum compatible version of each API function
• Fix list clippers not always using the specified context
• Fix v0.8.7's incorrect shim of ListClipper_ForceDisplayRangeByIndices
• Implement error detection in the OpenGL renderer
• Improve accuracy when scaling up fonts for HiDPI
• Limit image width/height to 8192 pixels
• Reduce the maximum count of per-context attachments to 1024
• Report an error when using an EEL callback function outside of a callback
• Support toggling WindowFlags_NoInputs after window creation
• Throw an error when resources are wastefully re-created every frame
• Update Dear ImGui to v1.90.5
• Linux: fix input of multiple ponctuation keys (+ PrintScreen on every platform)
• Linux: fix more cases of window positions going out of sync with the WM [#16]
• Linux: workaround windows taking a long time to open on KDE + Wayland + Intel GPUs [p=2769385]
• Linux: macOS: fix detection of the mouse hovering another application
• macOS: disable the Metal renderer and default to OpenGL on macOS earlier than 10.11
• macOS: don't stretch contents when resizing OpenGL windows using system decorations
• macOS: fix off-by-one mouse cursor position at the bottom of the screen
• macOS: fix stuck left mouse button if it's pressed before Ctrl and right click emulation is enabled
• macOS: fix the OpenGL renderer failing on macOS 10.9 [p=2766024]
• macOS: re-initialize OpenGL after moving a window to another monitor
• Windows: fix missing preview when dragging files from the Media Explorer
• Windows: fix possible file drop false positive when the cursor is near another window

C++ bindings (reaper_imgui_functions.h):

• Add binary backward compatibility and minimum version check
• Add error reporting by locally throwing ImGui_Error
• Add ImGui::load() to initialize the API instead of lazy-loading on call
• Now requires C++17 or newer
• Pass optional scalars directly by value

Lua bindings (imgui.lua, details here):

• Complete redesign of the backward-compatibility shim system
• Return a table containing the functions from the requested API version
  • Allow multiple modules within the same action to use different API versions
  • Numeric constants are exposed as values rather than functions
• Simplify the recommended example snippets using GetBuiltinPath + require

Python bindings:

• Remove ImGui_ prefix from function names and rename to imgui.py

Demo script:

• Examples > Custom rendering > Draw Channels
• Layout & Scrolling > Child windows > Auto-resize with constraints
• Layout & Scrolling > Child windows > Manual-resize
• Layout & Scrolling > Overlap Mode
• Tables > Angled headers
• Tables > Row height
• Tools > Item Picker
• Widgets > Drag and Drop > Tooltip at target location
• Widgets > Text Input > Miscellaneous
• Widgets > Tooltips

gfx2imgui.lua:

• Add REAPER v7.03's getchar(65536)&8 and getchar(65537), fix &4
• Support setfont with more than one font flag
• Trigger gfx.triangle's line heuristic with more than 2 unique points
• Various performance optimizations

API changes:

• Add alpha_mul optional parameter to GetColorEx
• Add BeginItemTooltip and SetItemTooltip
• Add ChildFlags_{AlwaysAutoResize,AlwaysUseWindowPadding,{,Auto}Resize{X,Y},Border,FrameStyle,None}
• Add ComboFlags_WidthFitPreview
• Add ConfigVar_HoverStationaryDelay and _HoverFlagsForTooltip{Mouse,Nav}
• Add DebugFlashStyleColor and DebugStartItemPicker
• Add DrawList_AddConcavePolyFilled and DrawList_PathFillConcave
• Add DrawList_AddEllipse{,Filled} and DrawList_PathEllipticalArcTo
• Add GetBuiltinPath (shortcut for "$resource_path/Scripts/ReaTeam Extensions/API")
• Add HoveredFlags_AllowWhenOverlappedBy{Item,Window} and _ForTooltip
• Add IsKeyChordPressed
• Add Key_F{13..24} and Key_App{Back,Forward}
• Add ListClipper_IncludeItemByIndex and rename _IncludeRangeByIndices to _IncludeItemsByIndex
• Add PopupFlags_NoReopen
• Add StyleVar_{Tab,TabBar}BorderSize and TabItemFlags_NoAssumedClosure
• Add TableAngledHeadersRow, TableColumnFlags_AngledHeader and StyleVar_TableAngledHeadersAngle
• Add TableFlags_HighlightHoveredColumn
• Add TreeNodeFlags_SpanAllColumns
• Remove BeginChildFrame and EndChildFrame (use BeginChild+ChildFlags_FrameStyle instead)
• Remove DestroyContext (was not useful since 0.5)
• Remove support of Windows virtual key codes (was deprecated in 0.6)
• Remove TableGetColumnSortSpecs's redundant sort_order return value
• Remove WindowFlags_AlwaysUseWindowPadding
• Rename ShowStackToolWindow to ShowIDStackToolWindow
• Rename {Selectable,TreeNode}Flags_AllowItemOverlap to _AllowOverlap
• Replace BeginChild's (bool)border parameter with (int)child_flags
• Replace SetItemAllowOverlap (after the item) with SetNextItemAllowOverlap (before the item)
• Set TableNeedSort's has_specs output value to false when not sorting in tristate mode
• Swap the column_{index,user_id} return values of TableGetColumnSortSpecs

v0.8.7.6

• Fix a crash when REAPER quits while a frame is still open
• Fix TableGetColumnSortSpecs accepting invalid negative indices
• Handle font size truncation when computing rendering scale
• macOS: fix fallback for missing font families in recent OS versions
• macOS: fix window position desync when changing monitor resolution in recent OS versions [p=2732554]
• Linux: fix a brief display of uninitialized pixels when opening docked windows
• Linux: fix windows not staying in place under certain monitor scales [#13]
• Linux: repair HiDPI scaling (regression from v0.8) [p=2752987]

v0.8.7.5

• Fix compatibility of file drag and drop with dear imgui v1.89.4
• Focus new docked windows when they are the only tab in the docker [p=2724239]
• Windows: fix detection of the "multimonitor aware" HiDPI mode on Windows 8.1 [p=2724812]
• Windows: fix windows not staying in place after moving under certain monitor scales [p=2724640]

gfx2imgui:

• Fix replacing images after (re)initializing gfx
• Harden gradrect to gracefully handle bogus Infinity/NaN delta arguments

v0.8.7.4

• Fix a crash when undocking via the context menu since 0.8.7.3

v0.8.7.3

• Report stored size when opening a docked window [p=2700189]
• macOS and Windows: fix a memory leak and potential crash when the renderer fails to initialize
• macOS: fix a crash when pressing mouse buttons higher than 5
• macOS: fix a memory leak and a potential crash in the Metal renderer when images are incorrectly re-created every frame while a window is occluded [p=2698614]
• macOS: fix mouse events not reaching REAPER after opening a native menu while a mouse button is down then pressing another button
• macOS: release mouse capture on window focus changes [p=2695756]
• macOS: send a single right-click event when handling the "Control+left-click emulates right-click" setting

v0.8.7.2

• Fix a crash when windows are closed out of ownership order while a mouse button is down
• macOS: fix the x86_64 release binary not containing FreeType2 since 0.8.7 [p=2694907]

v0.8.7.1

• Fix 0.8.7's imgui.lua always applying all available shims