在上一文《矢量圖控件VectorDraw使用教程：添加vdFramedControl (Visual C# 2005)》中，我們介紹了如何將VDF vdFramedControl控件添加到VS2005中。接下來，我們將在VS中演示一些更為復(fù)雜的例子。

ActionUtility對(duì)象可用于詢問客戶是否需要在程序中輸入一個(gè)點(diǎn)、矩形或者距離等數(shù)據(jù)。如何用戶需要數(shù)據(jù)一個(gè)點(diǎn)，你可以調(diào)用下列代碼：

gPoint userpoint;
vdFC.BaseControl.ActiveDocument.Prompt("Select a Point:");
//The user can either click a point or type at the command line a point like
5,5,2
StatusCode ret =
vdFC.BaseControl.ActiveDocument.ActionUtility.getUserPoint(out userpoint);
vdFC.BaseControl.ActiveDocument.Prompt(null);
if (ret == StatusCode.Success){
MessageBox.Show("The user selected: x:" + userpoint.x.ToString() + " y:" +
userpoint.y.ToString() + " z:" + userpoint.z.ToString() + " In UCS(user
coordinate system)");
}

也可以對(duì)上述代碼做一些修改，在輸入一個(gè)點(diǎn)，從而創(chuàng)建一個(gè)矩形，代碼如下：

vdFC.BaseControl.ActiveDocument.New();
gPoint userpoint;
vdFC.BaseControl.ActiveDocument.Prompt("Select a Point:");
//The user can either click a point or type at the command line a point like
5,5,2
StatusCode ret =
vdFC.BaseControl.ActiveDocument.ActionUtility.getUserPoint(out userpoint);
vdFC.BaseControl.ActiveDocument.Prompt(null);
if (ret == StatusCode.Success){
MessageBox.Show("The user selected: x:" + userpoint.x.ToString() + " y:"
+ userpoint.y.ToString() + " z:" + userpoint.z.ToString() + " In UCS(user
coordinate system)");
}
vdFC.BaseControl.ActiveDocument.Prompt("Other corner:");
//The user can either click a point or type at the command line a point like
5,5,2
object ret2 =
vdFC.BaseControl.ActiveDocument.ActionUtility.getUserRect(userpoint);
vdFC.BaseControl.ActiveDocument.Prompt(null);
Vector v = ret2 as Vector;
if (v != null) {
double angle = v.x;
double width = v.y;
double height = v.z;
//Calculate the point the user clicked.
//Use polar command to find the bottom right point moving width distance
from the initial point.
gPoint userpoint2 = userpoint.Polar(0.0, width);
//Use the polar again to go up height distance to find the upper right
point.
userpoint2 = userpoint2.Polar(VectorDraw.Geometry.Globals.HALF_PI,
height);
MessageBox.Show("The user selected 2nd point : x:" +
userpoint2.x.ToString() + " y:" + userpoint2.y.ToString() + " z:" +
userpoint2.z.ToString() + " In UCS(user coordinate system)");
vdFC.BaseControl.ActiveDocument.CommandAction.CmdRect(userpoint,
userpoint2);
}