Added VerticalSeparator() entry point in imgui_internal. Seperator() in an horizontal layout context still does that.

imgui.cpp

@@ -9879,23 +9879,22 @@ bool ImGui::ColorPicker4(const char* label, float col[4], ImGuiColorEditFlags fl
 // Horizontal separating line.
 void ImGui::Separator()
 {
-    ImGuiContext& g = *GImGui;
     ImGuiWindow* window = GetCurrentWindow();
     if (window->SkipItems)
         return;
+    ImGuiContext& g = *GImGui;
 
     ImGuiWindowFlags flags = 0;
     if ((flags & (ImGuiSeparatorFlags_Horizontal | ImGuiSeparatorFlags_Vertical)) == 0)
+        flags |= (window->DC.LayoutType == ImGuiLayoutType_Horizontal) ? ImGuiSeparatorFlags_Vertical : ImGuiSeparatorFlags_Horizontal;
+    IM_ASSERT(ImIsPowerOfTwo((int)(flags & (ImGuiSeparatorFlags_Horizontal | ImGuiSeparatorFlags_Vertical))));   // Check that only 1 option is selected
+    if (flags & ImGuiSeparatorFlags_Vertical)
     {
-        if (window->DC.LayoutType == ImGuiLayoutType_Horizontal)
+        VerticalSeparator();
-            flags |= ImGuiSeparatorFlags_Vertical;
+        return;
-        else
-            flags |= ImGuiSeparatorFlags_Horizontal;
     }
-    IM_ASSERT(ImIsPowerOfTwo((int)(flags & (ImGuiSeparatorFlags_Horizontal | ImGuiSeparatorFlags_Vertical))));   // Check that only 1 option is selected
 
-    if (flags & ImGuiSeparatorFlags_Horizontal)
+    // Horizontal Separator
-    {
     if (window->DC.ColumnsCount > 1)
         PopClipRect();
 
@@ -9923,19 +9922,25 @@ void ImGui::Separator()
         PushColumnClipRect();
         window->DC.ColumnsCellMinY = window->DC.CursorPos.y;
     }
-    }
+}
-    else if (flags & ImGuiSeparatorFlags_Vertical)
+
-    {
+void ImGui::VerticalSeparator()
-        const ImRect bb(window->DC.CursorPos, window->DC.CursorPos + ImVec2(1.0f, window->DC.CurrentLineHeight));
+{
+    ImGuiWindow* window = GetCurrentWindow();
+    if (window->SkipItems)
+        return;
+    ImGuiContext& g = *GImGui;
+
+    float y1 = window->DC.CursorPos.y;
+    float y2 = window->DC.CursorPos.y + window->DC.CurrentLineHeight; 
+    const ImRect bb(ImVec2(window->DC.CursorPos.x, y1), ImVec2(window->DC.CursorPos.x + 1.0f, y2));
     ItemSize(ImVec2(bb.GetWidth(), 0.0f));
     if (!ItemAdd(bb, NULL))
         return;
 
     window->DrawList->AddLine(ImVec2(bb.Min.x, bb.Min.y), ImVec2(bb.Min.x, bb.Max.y), GetColorU32(ImGuiCol_Separator));
-
     if (g.LogEnabled)
-            LogText("|");
+        LogText(" |");
-    }
 }
 
 void ImGui::Spacing()

imgui.h

@@ -209,7 +209,7 @@ namespace ImGui
     IMGUI_API void          PopButtonRepeat();
 
     // Cursor / Layout
-    IMGUI_API void          Separator();                                                        // horizontal line
+    IMGUI_API void          Separator();                                                        // separator, generally horizontal. inside a menu bar or in horizontal layout mode, this becomes a vertical separator.
     IMGUI_API void          SameLine(float pos_x = 0.0f, float spacing_w = -1.0f);              // call between widgets or groups to layout them horizontally
     IMGUI_API void          NewLine();                                                          // undo a SameLine()
     IMGUI_API void          Spacing();                                                          // add vertical spacing

imgui_internal.h

@@ -789,6 +789,8 @@ namespace ImGui
 
     IMGUI_API int           CalcTypematicPressedRepeatAmount(float t, float t_prev, float repeat_delay, float repeat_rate);
 
+    IMGUI_API void          VerticalSeparator();        // Vertical separator, for menu bars (use current line height). not exposed because it is misleading what it doesn't have an effect on regular layout.
+
     // FIXME-WIP: New Columns API
     IMGUI_API void          BeginColumns(const char* id, int count, ImGuiColumnsFlags flags = 0); // setup number of columns. use an identifier to distinguish multiple column sets. close with EndColumns().
     IMGUI_API void          EndColumns();                                                         // close columns