Disabling ImGuiItemFlags_LiveEditOnInputScalar by default! (#9476, #701)

docs/CHANGELOG.txt

@@ -47,6 +47,12 @@ Breaking Changes:
   of directly poking to io.ConfigColorEditFlags. More consistent and easier to discover.
 - Drag and Drop: commented out legacy name `ImGuiDragDropFlags_SourceAutoExpirePayload`
   which obsoleted in 1.90.9 (July 2024). Use `ImGuiDragDropFlags_PayloadAutoExpire`.
+- DragXXX, SliderXXX, InputScalar: with `ImGuiItemFlags_LiveEditOnInputScalar` now
+  defaulting to being disabled: inputting a value with the keyboard doesn't write
+  intermediate values to the backing variable. (#9476)
+    Before: DragFloat() with user typing "123" --> write back 1, then 12, then 123.
+    After:  DragFloat() with user typing "123" --> write back 123 when validated/unfocused.
+  You can enable the flag back for a given scope if needed by specific widget/behavior.
 
 
 Other Changes:
@@ -63,9 +69,13 @@ Other Changes:
 - Added `ImGuiItemFlags_LiveEditOnInputText` and `ImGuiItemFlags_LiveEditOnInputScalar`
   flags to configure the timing of applying edits of backing variables when typing
   values using a keyboard.
-  (#701, #9476, #3936, #3946, #5904, #6284, #8149, #8065, #8665, #9117, #9299, #700, #1351,
+  (#9476, #701, #3936, #3946, #5904, #6284, #8149, #8065, #8665, #9117, #9299, #700, #1351,
    #1875, #2060, #2215, #2380, #2550, #3083, #3338, #3556, #4373, #4714, #4885, #5184,
    #5777, #6707, #6766, #8004, #8303, #8915, #9308)
+  - ImGuiItemFlags_LiveEditOnInputText is enabled by default (same as before):
+    - The expectation is that for strings/text, enabling LiveEdit is a better default.
+  - ImGuiItemFlags_LiveEditOnInputScalar is disabled by default (new behavior):
+    - The expectation is that for numeric/scalars values, disabling LiveEdit is a better default.
   - Until now:
     - Edits where always applied immediately to backing variable, which is equivalent
       to the `ImGuiItemFlags_LiveEditXXX` flags being enabled.
@@ -76,28 +86,25 @@ Other Changes:
       Workarounds often required a backing store for scalar values, and there were
       also a few niggles related to `IsItemDeactivatedAfterEdit()` when using +/-
       buttons of an `InputInt()` widgets.
-      Many of those situations can now be naturally simplified by disabling
+    - Many of those situations can now be naturally simplified when disabling
-      `ImGuiItemFlags_LiveEditOnInputScalar`, which is expected to become the default.
+      `ImGuiItemFlags_LiveEditOnInputScalar` is disabled.
   - The new flags allows disabling this behavior selectively for strings fields
     such as `InputText()` vs scalar fields: `SliderInt()`, `InputFloat()`, etc.
     - When LiveEdit is disabled, edits are applied when pressing enter, tabbing out,
       clearing a field or deactivating due to a focus loss.
-    - The flag may be altered programmatically:
+    - The flag may be altered programmatically, e.g. for the entire frame scope:
-        PushItemFlag(ImGuiItemFlags_LiveEditOnInputScalar, false); // Disable for scalars
+        NewFrame();
+        PushItemFlag(ImGuiItemFlags_LiveEditOnInputScalar, true); // Enable for scalars for the whole frame
+        ....
+        PopItemFlag();
+        EndFrame();
+      Or for a specific widget:
+        PushItemFlag(ImGuiItemFlags_LiveEditOnInput, true);       // Enable for one widget
         SliderInt(...);
         PopItemFlag();
-        PushItemFlag(ImGuiItemFlags_LiveEditOnInput, true);        // Enable for all
-        SliderInt(...);
-        PopItemFlag();
-      But with upcoming new defaults it is expected you shouldn't touch them much.
-  - Both flags currently defaults to true, which matches previous behavior.
-    - The expectation is that for strings/text, enabling LiveEdit is a better default.
-    - The expectation is that for scalars, disable LiveEdit is a better default.
-    - The short-term intent is to change `ImGuiItemFlags_LiveEditOnInputScalar` to
-      default to being disabled, as soon as we get more feedback from users (SOON).
   - We intentionally are not adding `io.ConfigLiveEditXXX` fields to dictate the
-    default value of each `ImGuiItemFlags_LiveEditXXX`, because this is not
+    default value of each `ImGuiItemFlags_LiveEditXXX`, because this is not expected
-    expected to be a user preference but a programmer/widget preferences.
+    to be a user preference but a programmer/widget preferences.
     Also, we strive to make the toolkit consistent.
 - InputText:
   - Added `style.InputTextCursorSize` to configure cursor/caret thickness. (#7031, #9409)

imgui.cpp

@@ -395,6 +395,11 @@ IMPLEMENTING SUPPORT for ImGuiBackendFlags_RendererHasTextures:
  When you are not sure about an old symbol or function name, try using the Search/Find function of your IDE to look for comments or references in all imgui files.
  You can read releases logs https://github.com/ocornut/imgui/releases for more details.
 
+ - 2026/07/20 (1.92.9) - DragXXX, SliderXXX, InputScalar: with `ImGuiItemFlags_LiveEditOnInputScalar` now defaulting to being disabled:
+                         inputting a value with the keyboard doesn't write intermediate values to backing variable. (#9476)
+                         - Before: DragFloat() with user typing "123" --> write back 1, then 12, then 123.
+                         - After:  DragFloat() with user typing "123" --> write back 123 when validated/unfocused.
+                         You can enable the flag back for a given scope if needed by specific widget/behavior.
  - 2026/07/08 (1.92.9) - Drag and Drop: commented out legacy name `ImGuiDragDropFlags_SourceAutoExpirePayload` which obsoleted in 1.90.9 (July 2024). Use `ImGuiDragDropFlags_PayloadAutoExpire`.
  - 2026/07/06 (1.92.9) - ColorEdit: obsoleted SetColorEditOptions() function added in 1.51 (June 2017) in favor of directly poking to io.ConfigColorEditFlags. More consistent and easier to discover.
  - 2026/06/02 (1.92.9) - TreeNode: commented out legacy name ImGuiTreeNodeFlags_SpanTextWidth which was obsoleted in 1.90.7 (May 2024). Use ImGuiTreeNodeFlags_SpanLabelWidth instead.

imgui.h

@@ -30,7 +30,7 @@
 // Library Version
 // (Integer encoded as XYYZZ for use in #if preprocessor conditionals, e.g. '#if IMGUI_VERSION_NUM >= 12345')
 #define IMGUI_VERSION       "1.92.9 WIP"
-#define IMGUI_VERSION_NUM   19286
+#define IMGUI_VERSION_NUM   19287
 #define IMGUI_HAS_TABLE             // Added BeginTable() - from IMGUI_VERSION_NUM >= 18000
 #define IMGUI_HAS_TEXTURES          // Added ImGuiBackendFlags_RendererHasTextures - from IMGUI_VERSION_NUM >= 19198
 
@@ -1248,18 +1248,16 @@ enum ImGuiItemFlags_
     ImGuiItemFlags_Disabled                 = 1 << 6,   // false    // [Internal] Disable interactions. DOES NOT affect visuals. This is used by BeginDisabled()/EndDisabled() and only provided here so you can read back via GetItemFlags().
 
     //---------------------------------------------------------------------------------
-    // LiveEdit refers to applying edits to backing variables _while_ typing.
+    // LiveEdit refers to applying edits to backing variables _while_ typing a value using the keyboard.
     // Widget:                          | Input:   | w/ LiveEdit:    | Output:
     //   InputText()                    |   "123"  |   on(default)   |  "1" then "12" then "123"
     //   InputText()                    |   "123"  |   off           |  "123" after validating or tabbing out or losing focus.
-    //   DragFloat(), SliderInt(), etc. |   "123"  |   on(default)*  |  1 then 12 then 123
+    //   DragFloat(), SliderInt(), etc. |   "123"  |   on*           |  1 then 12 then 123
-    //   DragFloat(), SliderInt(), etc. |   "123"  |   off*          |  123 after validation or tabbing out or losing focus.
+    //   DragFloat(), SliderInt(), etc. |   "123"  |   off(default)* |  123 after validation or tabbing out or losing focus.
-    //---------------------------------------------------------------------------------
+    // (*) Since 1.92.9 (July 2026), ImGuiItemFlags_LiveEditOnInputScalar is OFF by default. In prior version it was ON for everything.
-    // (*) The feature is currently being evaluated, and the aim is to change ImGuiItemFlags_LiveEditOnInputScalar to OFF by default.
-    //     The legacy behavior until July 2026 was that LiveEdit was always ON for everything.
     //---------------------------------------------------------------------------------
     ImGuiItemFlags_LiveEditOnInputText      = 1 << 7,   // true     // InputText: apply keyboard edits to backing value while typing. Otherwise, edits are applied when validating, tabbing out or losing focus.
-    ImGuiItemFlags_LiveEditOnInputScalar    = 1 << 8,   // true*    // DragXXX, SliderXXX, InputScalar: apply keyboard edits to backing value while typing. Otherwise, edits are applied when validating, tabbing out or losing focus.
+    ImGuiItemFlags_LiveEditOnInputScalar    = 1 << 8,   // false    // DragXXX, SliderXXX, InputScalar: apply keyboard edits to backing value while typing. Otherwise, edits are applied when validating, tabbing out or losing focus.
     ImGuiItemFlags_LiveEditOnInput          = ImGuiItemFlags_LiveEditOnInputText | ImGuiItemFlags_LiveEditOnInputScalar,
 };
 

imgui_internal.h

@@ -1006,7 +1006,7 @@ enum ImGuiItemFlagsPrivate_
     ImGuiItemFlags_HasSelectionUserData     = 1 << 21, // false     // Set by SetNextItemSelectionUserData()
     ImGuiItemFlags_IsMultiSelect            = 1 << 22, // false     // Set by SetNextItemSelectionUserData()
 
-    ImGuiItemFlags_Default_                 = ImGuiItemFlags_AutoClosePopups | ImGuiItemFlags_LiveEditOnInputText | ImGuiItemFlags_LiveEditOnInputScalar, // Please don't change, use PushItemFlag() instead.
+    ImGuiItemFlags_Default_                 = ImGuiItemFlags_AutoClosePopups | ImGuiItemFlags_LiveEditOnInputText, // Please don't change, use PushItemFlag() instead.
 
     // Obsolete
     //ImGuiItemFlags_SelectableDontClosePopup = !ImGuiItemFlags_AutoClosePopups, // Can't have a redirect as we inverted the behavior