Function GetSize

Externals/imgui-1.46/Include/imgui_internal.h:201–201

    ImVec2          GetCenter() const               { return ImVec2((Min.x+Max.x)*0.5f, (Min.y+Max.y)*0.5f); }
    ImVec2          GetSize() const                 { return ImVec2(Max.x-Min.x, Max.y-Min.y); }
    float           GetWidth() const                { return Max.x-Min.x; }
    float           GetHeight() const               { return Max.y-Min.y; }
    ImVec2          GetTL() const                   { return Min; }