为了展现在MicroStation二次开发中使用WinForm界面控件与MicroStation内的数据交互，这里我们使用三个案例进行展示，分别为可视化矩形梁生成工具，EC属性赋值工具与文件选择复制工具。
可视化矩形梁生成工具
该工具会根据用户输入的数据实时在Panel中的用户控件中对截面信息进行预览，确定截面信息无误后点击确认会启动交互式工具，根据用户输入的信息生成矩形梁截面，通过交互式工具用户点击的位置确认矩形梁的起点与终点。
该工具涉及到的WinForm控件有：Label，TextBox，Button，Panel，UserControl（用户自定义控件）。
csharp
using Bentley.DgnPlatformNET;
class CreateDimensionCallbacks : DimensionCreateData
{
private DimensionStyle m_dimStyle;
private DgnTextStyle m_textStyle;
private Symbology m_symbology;
private LevelId m_levelId;
private DirectionFormatter m_directionFormatter;
public CreateDimensionCallbacks(DimensionStyle dimStyle, DgnTextStyle textStyle, Symbology symb, LevelId levelId, DirectionFormatter formatter)
{
m_dimStyle = dimStyle;
m_textStyle = textStyle;
m_symbology = symb;
m_levelId = levelId;
m_directionFormatter = formatter;
}
public override DimensionStyle GetDimensionStyle()
{
return m_dimStyle;
}
public override DgnTextStyle GetTextStyle()
{
return m_textStyle;
}
public override Symbology GetSymbology()
{
return m_symbology;
}
public override LevelId GetLevelId()
{
return m_levelId;
}
public override int GetViewNumber()
{
return 0;
}
//此函数返回的旋转矩阵与GetViewRotation返回的旋转矩阵共同声明了尺寸标注元素的方向
public override DMatrix3d GetDimensionRotation()
{
return DMatrix3d.Identity;
}
public override DMatrix3d GetViewRotation()
{
return DMatrix3d.Identity;
}
//用于从数字方向值构造字符串。
public override DirectionFormatter GetDirectionFormatter()
{
return m_directionFormatter;
}
}
}
csharp
namespace WinformUIIntroduction.UI
//
// textBox2
//
this.textBox2.Location = new System.Drawing.Point(62, 47);
this.textBox2.Name = "textBox2";
this.textBox2.Size = new System.Drawing.Size(100, 20);
this.textBox2.TabIndex = 2;
this.textBox2.Text = "500";
this.textBox2.TextChanged += new System.EventHandler(this.textBox2_TextChanged);
this.textBox2.KeyPress += new System.Windows.Forms.KeyPressEventHandler(this.textBox2_KeyPress);
//
// button1
//
this.button1.Font = new System.Drawing.Font("Microsoft YaHei UI", 9F, System.Drawing.FontStyle.Regular, System.Drawing.GraphicsUnit.Point, ((byte)(0)));
this.button1.Location = new System.Drawing.Point(41, 210);
this.button1.Name = "button1";
this.button1.Size = new System.Drawing.Size(75, 23);
this.button1.TabIndex = 3;
this.button1.Text = "确认";
this.button1.UseVisualStyleBackColor = true;
this.button1.Click += new System.EventHandler(this.button1_Click);
//
// BeamCreateMenu
//
this.AutoScaleDimensions = new System.Drawing.SizeF(6F, 13F);
this.AutoScaleMode = System.Windows.Forms.AutoScaleMode.Font;
this.ClientSize = new System.Drawing.Size(397, 261);
this.Controls.Add(this.button1);
this.Controls.Add(this.textBox2);
this.Controls.Add(this.textBox1);
this.Controls.Add(this.label2);
this.Controls.Add(this.label1);
this.Controls.Add(this.panel_view);
this.FormBorderStyle = System.Windows.Forms.FormBorderStyle.FixedDialog;
this.MaximizeBox = false;
this.Name = "BeamCreateMenu";
this.ShowIcon = false;
this.Text = "BeamCreateMenu";
this.TopMost = true;
this.ResumeLayout(false);
this.PerformLayout();
}
#endregion
private System.Windows.Forms.Panel panel_view;
private System.Windows.Forms.Label label1;
private System.Windows.Forms.Label label2;
private System.Windows.Forms.TextBox textBox1;
private System.Windows.Forms.TextBox textBox2;
private System.Windows.Forms.Button button1;
}
}
csharp
extern alias dgnDisplayAlias;
using System.Windows.Forms;
using System.Windows.Forms.Integration;
using dgnDisplayAlias::Bentley.DgnPlatform;
namespace WinformUIIntroduction.UI
{
public partial class PreviewPanel : UserControl
{
private readonly dgnDisplayAlias::Bentley.DgnPlatform.PreviewControl mPreviewControl;
public PreviewPanel(Bentley.DgnPlatformNET.DgnModelRef modelRef)
{
InitializeComponent();
unsafe
{
this.mPreviewControl =
new dgnDisplayAlias::Bentley.DgnPlatform.PreviewControl(
(dgnDisplayAlias::Bentley.DgnPlatform.DgnModel*)modelRef.GetDgnModel().GetNative());
}
this.mPreviewControl.ActivatePanTool();
this.mPreviewControl.PreviewControlOptions.IsFitToolVisible = true;
this.mPreviewControl.PreviewControlOptions.IsPanToolVisible = true;
this.mPreviewControl.PreviewControlOptions.IsViewingToolsVisible = true;
this.mPreviewControl.PreviewControlOptions.IsZoomToolsVisible = true;
this.mPreviewControl.PreviewControlOptions.IsRotationToolVisible = true;
this.mPreviewControl.IsEnabled = true;
this.mPreviewControl.IsManipulationEnabled = true;
this.mPreviewControl.PreviewControlOptions.RotationMode = RotationMode.Top;
this.mPreviewControl.PreviewControlOptions.RenderMode = RenderMode.FilledVisibleEdge;
ElementHost elementHost = new ElementHost();
elementHost.Dock = DockStyle.Fill;
elementHost.Child = this.mPreviewControl;
this.Controls.Add(elementHost);
}
public void ShowPreview(Bentley.DgnPlatformNET.Elements.Element ele)
{
Bentley.DgnPlatformNET.ElementAgenda agenda = new Bentley.DgnPlatformNET.ElementAgenda();
if (ele != null)
{
agenda.Insert(ele, true);
}
this.mPreviewControl.ShowPreview(agenda);
}
}
}
csharp
using Bentley.DgnPlatformNET;
else
{
EndDynamics();//关闭动态绘制
m_pos.Clear();//清空列表
}
return true;
}
protected override void OnDynamicFrame(DgnButtonEvent ev)//动态绘制时触发
{
ShapeElement m_beamProfile = CreateBeamProfile(m_pos[0]);//创建形元素用于确定梁截面
Element element = CreateSolidElement(m_pos[0], ev.Point,m_beamProfile);//创建梁实体元素
if (null == element)//若未成功生成梁实体元素
return;//返回
DynamicDrawElems(element);//动态绘制元素
}
private ShapeElement CreateBeamProfile(DPoint3d startPo)//创建用于表达梁截面的形元素
{
DPoint3d[] pos =
{
new DPoint3d(startPo.X-0.5*UI.BeamCreateMenu.m_width*m_uorPerMilliMeter,startPo.Y,startPo.Z),
new DPoint3d(startPo.X-0.5*UI.BeamCreateMenu.m_width*m_uorPerMilliMeter,startPo.Y,startPo.Z-1*UI.BeamCreateMenu.m_height*m_uorPerMilliMeter),
new DPoint3d(startPo.X+0.5*UI.BeamCreateMenu.m_width*m_uorPerMilliMeter,startPo.Y,startPo.Z-1*UI.BeamCreateMenu.m_height*m_uorPerMilliMeter),
new DPoint3d(startPo.X+0.5*UI.BeamCreateMenu.m_width*m_uorPerMilliMeter,startPo.Y,startPo.Z)
};//确定梁截面端点坐标集
ShapeElement beamProfile = new ShapeElement(m_dgnModel,null,pos);//创建表达梁截面的形元素
return beamProfile;//返回梁截面的形元素
}
private void DynamicDrawElems(Element element)
{
RedrawElems redrawElems = new RedrawElems();//使用元素用于动态绘制
redrawElems.SetDynamicsViewsFromActiveViewSet(Session.GetActiveViewport());//设置视角
redrawElems.DrawMode = DgnDrawMode.TempDraw;//设置绘制模式
redrawElems.DrawPurpose = DrawPurpose.Dynamics;//设置绘制目标
redrawElems.DoRedraw(element);//使用元素用于动态绘制
}
private Element CreateSolidElement(DPoint3d startPo, DPoint3d endPo, ShapeElement beamProfile)
{
DVector3d vector = new DVector3d(startPo, endPo);//声明梁方向向量
if (vector == DVector3d.Zero)//判断是否成功获取
{
return null;//返回空
}
TransformInfo trans = new TransformInfo(DTransform3d.FromRotationAroundLine(startPo, DVector3d.UnitZ, vector.Rotate90CCWXY().AngleXY));//声明变换信息
beamProfile.ApplyTransform(trans);//对形元素施加变换
Element solid = SolidElement.CreateProjectionElement(m_dgnModel, null, beamProfile, startPo, vector, DTransform3d.Identity, true);//创建拉伸实体
return solid;//返回拉伸实体
}
private void CreateBeamElem()
{
ShapeElement beamProfile= CreateBeamProfile(m_pos[0]);//创建表达梁截面的形元素
Element element = CreateSolidElement(m_pos[0], m_pos[1], beamProfile);//创建拉伸元素
element.AddToModel();//将拉伸元素写入模型
}
}
}