GEOS SDK TechDocs
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VisContent
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2 Basic VisContent Usage
The VisContent has many instance data fields above and beyond those defined in
VisClass
and
VisCompClass
. These new instance fields deal with such topics as content attributes, the way the content interacts with the view, the document described by the content, and how the content handles input.
All the instance fields defined by
VisContentClass
and their definitions are shown in VisContent Instance Data Fields
. Each field is described later in this section.
Code Display 17-1 VisContent Instance Data Fields
/* All the instance fields defined in VisContentClass are described below. You * will likely use very few of them, if any; see the later sections of this * chapter for specific information about each field. */
/* The following fields deal with the GenView and the view window. */
@instance optr VCNI_view = 0;
@instance WindowHandle VCNI_window = 0;
@instance word VCNI_viewHeight = 0;
@instance word VCNI_viewWidth = 0;
/* VCNI_attrs determines the content's attributes. */
@instance VisContentAttrs VCNI_attrs = 0;
/* The possible flags for VCNI_attrs are * VCNA_SAME_WIDTH_AS_VIEW 0x80 * VCNA_SAME_HEIGHT_AS_VIEW 0x40 * VCNA_LARGE_DOCUMENT_MODEL 0x20 * VCNA_WINDOW_COORDINATE_MOUSE_EVENTS 0x10 * VCNA_ACTIVE_MOUSE_GRAB_REQUIRES_LARGE_EVENTS 0x08 * VCNA_VIEW_DOC_BOUNDS_SET_MANUALLY 0x04 */
/* The following fields determine features of the content's document. */
@instance PointDWord VCNI_docOrigin = {0, 0};
@instance PointWWFixed VCNI_scaleFactor = {{0, 1}, {0, 1}};
/* The following fields deal with how the content handles input. */
@instance ChunkHandle VCNI_prePassiveMouseGrabList = 0;
@instance VisMouseGrab VCNI_impliedMouseGrab =
{0, 0, {0, 0}, (VIFGF_MOUSE | VIFGF_PTR), 0};
@instance VisMouseGrab VCNI_activeMouseGrab =
{0, 0, {0, 0}, 0, 0};
@instance ChunkHandle VCNI_postPassiveMouseGrabList = 0;
@instance KbdGrab VCNI_kbdGrab = {0, 0};
@instance FTVMCGrab VCNI_focusExcl = {0, MAEF_FOCUS};
@instance FTVMCGrab VCNI_targetExcl = {0, MAEF_TARGET};
@instance Handle VCNI_holdUpInputQueue = 0;
@instance word VCNI_holdUpInputCount = 0;
@instance byte VCNI_holdUpInputFlags = 0;
/* The type flags of the content are special and should not be altered. */
@default VI_typeFlags = VTF_IS_COMPOSITE | VTF_IS_WINDOW |
VTF_IS_CONTENT | VTF_IS_WIN_GROUP |
VTF_IS_INPUT_NODE;
Fields That Affect the Document
Fields That Affect Input Events
GEOS SDK TechDocs
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| VisContent
| 2 Basic VisContent Usage