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Viewport: Win32: Workaround to the fact that ::WindowFromPoint() seems to return Windows using ImGuiViewportFlags_NoInputs / HTTRANSPARENT when dragging nearby the platform title bar. This is to allow using platform decoration. I don't understand this well atm. (#1542)

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omar 2019-01-02 18:22:31 +01:00
parent 4a6f95acc8
commit cfcad42b89
1 changed files with 3 additions and 2 deletions
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5
examples/imgui_impl_win32.cpp
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@ -185,10 +185,11 @@ static void ImGui_ImplWin32_UpdateMousePos()
// - This is _ignoring_ viewports with the ImGuiViewportFlags_NoInputs flag (pass-through windows).
// - This is _regardless_ of whether another viewport is focused or being dragged from.
// If ImGuiBackendFlags_HasMouseHoveredViewport is not set by the back-end, imgui will ignore this field and infer the information by relying on the
// rectangles and last focused time of every viewports it knows about. It will be unaware of other windows that may be sitting between or over your windows.
// rectangles and last focused time of every viewports it knows about. It will be unaware of foreign windows that may be sitting between or over your windows.
if (HWND hovered_hwnd = ::WindowFromPoint(mouse_screen_pos))
if (ImGuiViewport* viewport = ImGui::FindViewportByPlatformHandle((void*)hovered_hwnd))
io.MouseHoveredViewport = viewport->ID;
if ((viewport->Flags & ImGuiViewportFlags_NoInputs) == 0) // FIXME: We still get our NoInputs window with WM_NCHITTEST/HTTRANSPARENT code when decorated?
io.MouseHoveredViewport = viewport->ID;
}
void ImGui_ImplWin32_NewFrame()