Volume 6A: Motif Programming Manual

Widget

CreateActionArea(parent, actions, num_actions)

Widget parent;

ActionAreaItem *actions;

int num_actions;

{

Widget action_area, widget;

int i;

action_area = XtVaCreateWidget ("action_area", xmFormWidgetClass, parent,

XmNfractionBase, TIGHTNESS*num_actions − 1,

XmNleftOffset, 10,

XmNrightOffset, 10,

NULL);

for (i = 0; i < num_actions; i++) {

widget = XtVaCreateManagedWidget (actions[i].label,

xmPushButtonWidgetClass, action_area,

XmNleftAttachment, i? XmATTACH_POSITION : XmATTACH_FORM,

XmNleftPosition, TIGHTNESS*i,

XmNtopAttachment, XmATTACH_FORM,

XmNbottomAttachment, XmATTACH_FORM,

XmNrightAttachment,

i != num_actions − 1 ? XmATTACH_POSITION : XmATTACH_FORM,

XmNrightPosition, TIGHTNESS * i + (TIGHTNESS − 1),

XmNshowAsDefault, i == 0,

XmNdefaultButtonShadowThickness, 1,

NULL);

if (actions[i].callback)

XtAddCallback (widget, XmNactivateCallback,

actions[i].callback, actions[i].data);

if (i == 0) {

/* Set the action_area's default button to the first widget

* created (or, make the index a parameter to the function

* or have it be part of the data structure). Also, set the

* pane window constraint for max and min heights so this

* particular pane in the PanedWindow is not resizable.

*/

Dimension height, h;

XtVaGetValues (action_area, XmNmarginHeight, &h, NULL);

XtVaGetValues (widget, XmNheight, &height, NULL);

height += 2 * h;

XtVaSetValues (action_area,

XmNdefaultButton, widget,

XmNpaneMaximum, height,

XmNpaneMinimum, height,

NULL);

}

}

XtManageChild (action_area);

return ...