v1.38

• Added DragFloat(), DragInt() widget, click and drag to adjust value with given step. Hold SHIFT/ALT to speed-up/slow-down. Double-click or CTRL+click to input text. Passing min >= max makes the widget unbounded.
• Added DragFloat2(), DragFloat3(), DragFloat4(), DragInt2(), DragInt3(), DragInt4() helper variants.
• Added ShowMetricsWindow() which is mainly useful to debug ImGui internals. Added IO.MetricsRenderVertices counter.
• Added ResetMouseDragDelta() for iterative dragging operations.
• Added ImFontAtlas::AddFontFromCompressedTTF() helper + binary_to_compressed_c.cpp tool to compress a file and create a .c array from it.
• Added PushId() GetId() variants that takes string range to avoid user making unnecessary copies.
• Added IsItemVisible().
• Renamed IsClipped() to IsRectClipped(). Kept inline redirection function (will obsolete).
• Renamed ImDrawList::AddArc() to ImDrawList::AddArcFast().
• Fixed IsRectClipped() incorrectly returning false when log is enabled.
• Slider: visual fix in the unlikely that style.GrabMinSize is larger than a slider.
• SliderFloat: removed support for unbound slider (using FLT_MAX), caused various inconsistency. Use InputFloat()/DragFloat().
• ColorEdit4: hide components prefix if there's no space for them.
• Combo: adding frame padding inside the combo box.
• Columns: mouse dragging uses absolute mouse coordinates.Fixed dragging left-most column of an auto-resizable window. #125
• Selectable: render highlight into AutoFitPadding region but do not extend it, fixing visual gap.
• Focus: Allow SetWindowFocus(NULL) to remove focus.
• Focus: Clicking on void (outside an ImGui windows) loses keyboard-focus so application can use TAB.
• Popup: Fixed hovering over a popup's child (popups disable hovering on other windows but not their childs) #197
• Fixed active widget not releasing its active state while being clipped.
• Fixed user-facing version of IsItemHovered() ignoring overlapping windows.
• Fixed label vertical alignment for InputInt2(), InputInt3(), InputInt4().
• Fixed new collapsed auto-resizing window with saved .ini settings not calculating their initial width #176
• Fixed Begin() returning true on collapsed windows that had loaded settings #176
• Fixed style.DisplaySafeAreaPadding handling from being applied on window prior to them auto-fitting.
• ShowTestWindow(): added examples for DragFloat, DragInt and only custom label embedded in format strings.
• ShowTestWindow(): fixed "manipulating titles" example not doing the right thing, broken in ff35d24
• Examples: OpenGL/GLFW: Fixed modifier key state setting in GLFW callbacks.
• Examples: OpenGL/GLFW: Added glBindTexture(0) in OpenGL fixed pipeline examples. Save restore current program and texture in the OpenGL3 example.
• Examples: DirectX11: Removed unnecessary vertices conversion and CUSTOMVERTEX types.
• Comments, fixes, tweaks.