Internals: Remove requirement to define IMGUI_DEFINE_PLACEMENT_NEW (#1103)

This commit is contained in:
omar 2017-11-07 13:11:45 +01:00
parent 1870738880
commit aae52522c3

View File

@ -2,10 +2,9 @@
// (internals)
// You may use this file to debug, understand or extend ImGui features but we don't provide any guarantee of forward compatibility!
// Implement maths operators for ImVec2 (disabled by default to not collide with using IM_VEC2_CLASS_EXTRA along with your own math types+operators)
// Set:
// #define IMGUI_DEFINE_MATH_OPERATORS
// Define IM_PLACEMENT_NEW() macro helper.
// #define IMGUI_DEFINE_PLACEMENT_NEW
// To implement maths operators for ImVec2 (disabled by default to not collide with using IM_VEC2_CLASS_EXTRA along with your own math types+operators)
#pragma once
@ -159,12 +158,10 @@ static inline float ImLinearSweep(float current, float target, float speed)
// We call C++ constructor on own allocated memory via the placement "new(ptr) Type()" syntax.
// Defining a custom placement new() with a dummy parameter allows us to bypass including <new> which on some platforms complains when user has disabled exceptions.
#ifdef IMGUI_DEFINE_PLACEMENT_NEW
struct ImPlacementNewDummy {};
inline void* operator new(size_t, ImPlacementNewDummy, void* ptr) { return ptr; }
inline void operator delete(void*, ImPlacementNewDummy, void*) {}
#define IM_PLACEMENT_NEW(_PTR) new(ImPlacementNewDummy(), _PTR)
#endif
//-----------------------------------------------------------------------------
// Types