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Fixed an inconsistency between IsItemHovered() and internal hovering check, where IsItemHovered() would return true if mouse was first clicked on the background of a non-moveable window. (#8877)

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ocornut
2025-08-11 15:36:54 +02:00
parent 8239a0e0c4
commit 5a6fa33b88
3 changed files with 8 additions and 4 deletions
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6
docs/CHANGELOG.txt
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@@ -49,6 +49,12 @@ Breaking Changes:
Other Changes:
- Fixed an inconsistency between IsItemHovered() and internal hovering check,
where IsItemHovered() would return true to mouse was first clicked on the
background of a non-moveable window then moved over the item or button.
Note that while it is consistent with other logic, there is a possibility
that some third-party code may accidentally relied on this.
(#8877) [@achabense, @ocornut]
- Fonts: fixed an issue when a font using MergeMode has a reference size
specified but the target font doesn't. Usually either all fonts should
have a reference size (only required when specifying e.g. GlyphOffset),

4
imgui.cpp
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@@ -4656,7 +4656,6 @@ static ImGuiHoveredFlags ApplyHoverFlagsForTooltip(ImGuiHoveredFlags user_flags,
}
// This is roughly matching the behavior of internal-facing ItemHoverable()
// - we allow hovering to be true when ActiveId==window->MoveID, so that clicking on non-interactive items such as a Text() item still returns true with IsItemHovered()
// - this should work even for non-interactive items that have no ID, so we cannot use LastItemId
bool ImGui::IsItemHovered(ImGuiHoveredFlags flags)
{
@@ -4698,8 +4697,7 @@ bool ImGui::IsItemHovered(ImGuiHoveredFlags flags)
const ImGuiID id = g.LastItemData.ID;
if ((flags & ImGuiHoveredFlags_AllowWhenBlockedByActiveItem) == 0)
if (g.ActiveId != 0 && g.ActiveId != id && !g.ActiveIdAllowOverlap)
if (g.ActiveId != window->MoveId)
return false;
return false;
// Test if interactions on this window are blocked by an active popup or modal.
// The ImGuiHoveredFlags_AllowWhenBlockedByPopup flag will be tested here.

2
imgui.h
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@@ -29,7 +29,7 @@
// Library Version
// (Integer encoded as XYYZZ for use in #if preprocessor conditionals, e.g. '#if IMGUI_VERSION_NUM >= 12345')
#define IMGUI_VERSION "1.92.2 WIP"
#define IMGUI_VERSION_NUM 19214
#define IMGUI_VERSION_NUM 19215
#define IMGUI_HAS_TABLE // Added BeginTable() - from IMGUI_VERSION_NUM >= 18000
#define IMGUI_HAS_TEXTURES // Added ImGuiBackendFlags_RendererHasTextures - from IMGUI_VERSION_NUM >= 19198