写一段c#代码,picturebox继承HWindowControl控件,增加手绘roi功能
时间: 2023-07-16 16:15:16 浏览: 87
以下是一个示例代码,演示如何使用C#实现PictureBox继承HWindowControl控件,并添加手绘ROI功能:
```csharp
using System;
using System.Drawing;
using HalconDotNet;
using System.Windows.Forms;
public class HImageBox : HWindowControl
{
private HObject roiObject;
private HTuple startX, startY, endX, endY;
private bool isROICreating = false;
public HImageBox() : base()
{
roiObject = new HObject();
startX = new HTuple();
startY = new HTuple();
endX = new HTuple();
endY = new HTuple();
}
protected override void OnPaint(PaintEventArgs e)
{
base.OnPaint(e);
if (isROICreating)
{
HOperatorSet.SetDraw(WindowHandle, "margin");
HOperatorSet.SetColor(WindowHandle, "red");
HOperatorSet.DrawLine(WindowHandle, startY, startX, endY, endX);
}
}
protected override void OnMouseDown(MouseEventArgs e)
{
base.OnMouseDown(e);
if (e.Button == MouseButtons.Left)
{
isROICreating = true;
startX = e.X;
startY = e.Y;
}
}
protected override void OnMouseMove(MouseEventArgs e)
{
base.OnMouseMove(e);
if (isROICreating)
{
endX = e.X;
endY = e.Y;
Refresh();
}
}
protected override void OnMouseUp(MouseEventArgs e)
{
base.OnMouseUp(e);
if (e.Button == MouseButtons.Left)
{
isROICreating = false;
HOperatorSet.GenRectangle1(out roiObject, startY, startX, endY, endX);
HOperatorSet.DispObj(roiObject, WindowHandle);
}
}
public HObject GetROIObject()
{
return roiObject;
}
}
```
在这个示例代码中,我们创建了一个名为`HImageBox`的类,该类继承了`HWindowControl`控件。我们使用了`HObject`类来存储手绘ROI,`HTuple`来存储ROI的起始和结束坐标,以及一个布尔变量`isROICreating`来跟踪ROI的创建状态。
在类的构造函数中,我们初始化了各种变量。在`OnPaint`方法中,我们根据ROI的状态来绘制ROI的轮廓。在`OnMouseDown`方法中,当用户按下鼠标左键时,我们设置`isROICreating`为`true`,并记录下起始坐标。在`OnMouseMove`方法中,当用户移动鼠标时,我们记录下结束坐标,并刷新控件以绘制ROI的轮廓。在`OnMouseUp`方法中,当用户松开鼠标左键时,我们设置`isROICreating`为`false`,并生成ROI对象。
最后,我们添加了一个`GetROIObject`方法,返回ROI对象,供用户在其他地方使用。