IMGUI_APIboolBegin(constchar*name,bool*p_opened=NULL,ImGuiWindowFlagsflags=0);// see .cpp for details. return false when window is collapsed, so you can early out in your code. 'bool* p_opened' creates a widget on the upper-right to close the window (which sets your bool to false).
IMGUI_APIboolBegin(constchar*name,bool*p_opened,constImVec2&size_on_first_use,floatbg_alpha=-1.0f,ImGuiWindowFlagsflags=0);// this is the older/longer API. call SetNextWindowSize() instead if you want to set a window size. For regular windows, 'size_on_first_use' only applies to the first time EVER the window is created and probably not what you want! maybe obsolete this API eventually.
IMGUI_APIboolBegin(constchar*name,bool*p_opened,constImVec2&size_on_first_use,floatbg_alpha=-1.0f,ImGuiWindowFlagsflags=0);// this is the older/longer API. the extra parameters aren't very relevant. call SetNextWindowSize() instead if you want to set a window size. For regular windows, 'size_on_first_use' only applies to the first time EVER the window is created and probably not what you want! maybe obsolete this API eventually.
IMGUI_APIvoidEnd();
IMGUI_APIboolBeginChild(constchar*str_id,constImVec2&size=ImVec2(0,0),boolborder=false,ImGuiWindowFlagsextra_flags=0);// begin a scrolling region. size==0.0f: use remaining window size, size<0.0f: use remaining window size minus abs(size). size>0.0f: fixed size. each axis can use a different mode, e.g. ImVec2(0,400).