Hierarchical Modeling - Essentials of Interactive Computer Graphics - page 294

SceneTree Control

Select a SceneNode
Select a Primitive
in current
SceneNode

XformInfo Control
controlls xformInfo of
selected SceneNode

Primitive Control
controlls attributes of
selected primitive

Figure 11.10.

Tutorial 11.5 user interface details.

Recall that a GUI container is a subwindow that contains functionally related GUI
elements for organization and reuse purposes. To create GUI containers with the
MFC GUI API, on the front end we must do the following. GUI container. See Tuto-

rial2.8onp.69formorede-
tails of working with GUI con-
tainers using MFC.

1. Create a separate GUI ID (GUI element) to contain all the GUI elements.

2. Create a placeholder on the application window for placing the subwindow.

In the back-end implementation, we must do the following.

1. Create a data type, that is a class, to define the functionality of the GUI
elements.

2. Call the ReplaceDialogControl() function at run time to place the GUI
container into the application window.

In this case, as illustrated in Figure 11.11, SceneTreeControl contains two sep-
arate GUI containers, XformInfoControl and PrimitiveControl :

GUI Container GUI Front End (GUI ID) Implementation Back End

IDD _ SCENETREE _ CONTROL

data type: CSceneTreeControl

SceneTreeControl

IDD _ PRIMITIVE _ CONTROL

data type: CPrimitiveControl

PrimitiveControl

IDD _ XFORMINFO _ CONTROL

XformInfoControl data type: CXformInfoControl

Listing 11.9 reminds us that in our implementations, a GUI container data type
( CSceneTreeControl ) typically subclasses from the MFC CDialog class. At
label A, we are reminded that the OnInitDialog() function will be called during
the MFC CDialog creation. At label B, we see that the CSceneTreeControl
class has an instance of CXformInfoControl and an instance of CPrimitive