com组件集成

# C#生成com组件的dll
```java
namespace jhMyCom
{
    [ComVisible(true)]
    [ClassInterface(ClassInterfaceType.None)]
    [Guid("773BBBF6-A2E2-4ED6-A9A8-1980B2704544")] // 替换为你的GUID
    public partial class Demo : UserControl, IEmr
    {
        public Demo()
        {
            InitializeComponent();
        }

public int JHgetHandle()
        {
            JHEMR.JHEMRPadControl.UCEMRPad obj = new JHEMR.JHEMRPadControl.UCEMRPad();
            this.Controls.Add(obj);
            return this.Handle.ToInt32();
        }
        public int JH2()
        {
            MessageBox.Show(2.ToString());
            return 2;
        }
    }
    [ComVisible(true)]
    [Guid("85078D2B-8EC9-4CC1-9F9D-0A2331CF77B0")]// 替换为你的GUID  
    [InterfaceType(ComInterfaceType.InterfaceIsIDispatch)]
    public interface IEmr
    {
        [ComVisible(true)]
        int JHgetHandle();
        int JH2();
    }
}

```
# 注册com的dll
会将com信息注册到注册表中
备注：如果vs生成勾选了com自动注册，会自动注册到注册表
```js
//32位注册
C:\Windows\Microsoft.NET\Framework\v4.0.30319\RegAsm.exe D:\JHEMR\jhMyCom.dll /codebase
//64位注册
C:\Windows\Microsoft.NET\Framework64\v4.0.30319\RegAsm.exe D:\JHEMR\jhMyCom.dll /codebase
```
# pb集成com关键代码
```js
jhCom = Create OLEObject
jhCom.ConnectToNewObject("{773BBBF6-A2E2-4ED6-A9A8-1980B2704544}")
unsignedlong hwnd
hwnd =  jhCom.JHgetHandle()
long newParent
newParent = Handle(gb_1)
SetParent(hwnd,newParent)
```