Internals: renamed GetIOEx() to GetIO(). Added GetPlatformIO() explic…

…it context variant.

imgui.cpp

@@ -4814,7 +4814,7 @@ ImGuiIO& ImGui::GetIO()
 }
 
 // This variant exists to facilitate backends experimenting with multi-threaded parallel context. (#8069, #6293, #5856)
-ImGuiIO& ImGui::GetIOEx(ImGuiContext* ctx)
+ImGuiIO& ImGui::GetIO(ImGuiContext* ctx)
 {
     IM_ASSERT(ctx != NULL);
     return ctx->IO;
@@ -4826,6 +4826,13 @@ ImGuiPlatformIO& ImGui::GetPlatformIO()
     return GImGui->PlatformIO;
 }
 
+// This variant exists to facilitate backends experimenting with multi-threaded parallel context. (#8069, #6293, #5856)
+ImGuiPlatformIO& ImGui::GetPlatformIO(ImGuiContext* ctx)
+{
+    IM_ASSERT(ctx != NULL;
+    return ctx->PlatformIO;
+}
+
 // Pass this to your backend rendering function! Valid after Render() and until the next call to NewFrame()
 ImDrawData* ImGui::GetDrawData()
 {

imgui_internal.h

@@ -2980,7 +2980,8 @@ namespace ImGui
     // If this ever crashes because g.CurrentWindow is NULL, it means that either:
     // - ImGui::NewFrame() has never been called, which is illegal.
     // - You are calling ImGui functions after ImGui::EndFrame()/ImGui::Render() and before the next ImGui::NewFrame(), which is also illegal.
-    IMGUI_API ImGuiIO&      GetIOEx(ImGuiContext* ctx);
+    IMGUI_API ImGuiIO&         GetIO(ImGuiContext* ctx);
+    IMGUI_API ImGuiPlatformIO& GetPlatformIO(ImGuiContext* ctx);
     inline    ImGuiWindow*  GetCurrentWindowRead()      { ImGuiContext& g = *GImGui; return g.CurrentWindow; }
     inline    ImGuiWindow*  GetCurrentWindow()          { ImGuiContext& g = *GImGui; g.CurrentWindow->WriteAccessed = true; return g.CurrentWindow; }
     IMGUI_API ImGuiWindow*  FindWindowByID(ImGuiID id);