Windows: clicking on a window's empty-space to move/focus a window checks for lack of mouse button ownership. (#9382)

docs/CHANGELOG.txt

@@ -43,6 +43,11 @@ Breaking Changes:
 
 Other Changes:
 
+- Windows:
+  - Clicking on a window's empty-space to move/focus a window checks
+    for lack of mouse button ownership. This gives an additional opportunity
+    for user code to bypass it without using a clickable item. (#9382)
+
 
 -----------------------------------------------------------------------
  VERSION 1.92.8 (Released 2026-05-12)

imgui.cpp

@@ -5357,7 +5357,7 @@ void ImGui::UpdateMouseMovingWindowEndFrame()
 
     // Click on empty space to focus window and start moving
     // (after we're done with all our widgets)
-    if (g.IO.MouseClicked[0])
+    if (IsMouseClicked(0, ImGuiInputFlags_None, ImGuiKeyOwner_NoOwner))
     {
         // Handle the edge case of a popup being closed while clicking in its empty space.
         // If we try to focus it, FocusWindow() > ClosePopupsOverWindow() will accidentally close any parent popups because they are not linked together any more.
@@ -5395,7 +5395,7 @@ void ImGui::UpdateMouseMovingWindowEndFrame()
     // With right mouse button we close popups without changing focus based on where the mouse is aimed
     // Instead, focus will be restored to the window under the bottom-most closed popup.
     // (The left mouse button path calls FocusWindow on the hovered window, which will lead NewFrame->ClosePopupsOverWindow to trigger)
-    if (g.IO.MouseClicked[1] && g.HoveredId == 0)
+    if (g.HoveredId == 0 && IsMouseClicked(1, ImGuiInputFlags_None, ImGuiKeyOwner_NoOwner))
     {
         // Find the top-most window between HoveredWindow and the top-most Modal Window.
         // This is where we can trim the popup stack.