Fix a memory leak of ImGuiColumnsSet's Columns vector. ImVector doesn't call destructors.

Internals: NewFrame: Shuffled some code around (to minimize upcoming patches)

ImFontAtlas: Handle stb_truetype failure more gracefully, GetTexDataAsRGBA32() won't crash during conversion. (#1527)

Internals: ImRect: Minor formatting tweaks.

Exposed IM_OFFSETOF() helper in imgui.h

Reorganized comments in the IMGUI_DISABLE_OBSOLETE_FUNCTIONS function. Added an IM_ASSERT(0).

Removed CalcItemRectClosestPoint() which was weird and not really used by anyone except demo code. If you need it it's easy to replicate on your side. ...

Removed internal corresponding ImRect::GetClosestPoint() for now.
Essentially revert dcaafff.

Examples: Comments about invalid mouse pos.

MenuBar: Fixed menu bar pushing a clipping rect outside of its allocated bound (usually unnoticeable).

Demo: Tweak. Comments. Metrics: Added some Drag and Drop info.

BeginPopupModal(): the conditional test for SetNextWindowPos() was polling the wrong window, which in practice made the test succeed all the time.

Combo: When peeking into the popup window for alignment we check if the window was active, which is more correct. (no known issue in current codebase, but we'll need that change for later)

DragDrop: Added IsDragDropActive() helper which is useful for binding to decide how to handle mouse inputs.

TreeNode: node with the ImGuiTreeNodeFlags_Leaf flag correctly disable highlight when DragDrop is active. (#143, #581)

Version 1.54 WIP

Demo dinaries update

Update README.md

ListBox() changed signature of ListBox() to match Combo(). Still not very happy about not using const char** anymore. (#931)

Fixing error: declaration of ‘size’ shadows a member of 'this' [-Werror=shadow]

Demo: Console: More friendly to text color changes.

Version 1.53

Demo: BeginCombo() demo code

Moving window doesn't use accumulating MouseDelta so straying out of boundaries keeps moved window at the same spot.

Examples: DirectX10,DirectX11: Moved call to OMSetRenderTargets() in main loop so example code can integrate more nicely with other code.

Misc comments, removed duplicated IM_ARRAYSIZE macro in imgui_demo.cpp (it is now declared in imgui.h)

Examples: Vulkan: Tweak

Examples: Comments, synched some minor drift between examples + stronger suggestion to use StyleColorsDark().

Renamed the emblematic ShowTestWindow() function to ShowDemoWindow(). Kept redirection function (will obsolete).

Comments

Fixed incorrect IM_DELETE macro (9cda86d) (#1517, #484, #504)