C# 言語を使用して ActiveX コントロールを作成しました。ここで、UI (いくつかのテキスト ボックスとラベル) を ActiveX コントロールに追加する必要があります。どうやってやるの？次のコードを試しましたが、成功しませんでした (このコードは msdn.microsoft.com から取得しました)。
using System;
using System.Collections.Generic;
using System.ComponentModel;
using System.Text;
using System.Windows.Forms;
using System.Runtime.InteropServices;
using System.Drawing;
using System.Drawing.Imaging;
using System.IO;
using System.Runtime.CompilerServices;
using System.Data;
using System.Linq;
namespace AxControls
{
[ComVisible(true)]
[ClassInterface(ClassInterfaceType.None)]
[Guid("42BBA00A-515E-45b5-9EAF-3827F7AEB4FA")]
[ProgId("AxControls.HelloWorld")]
[ComDefaultInterface(typeof(IClip))]
public class HelloWorld : UserControl
{
// Create the controls.
private System.Windows.Forms.ErrorProvider errorProvider1;
private System.Windows.Forms.TextBox textName;
private System.Windows.Forms.TextBox textAddress;
private System.Windows.Forms.TextBox textCity;
private System.Windows.Forms.TextBox textStateProvince;
private System.Windows.Forms.TextBox textPostal;
private System.Windows.Forms.TextBox textCountryRegion;
private System.Windows.Forms.TextBox textEmail;
private System.Windows.Forms.Label labelName;
private System.Windows.Forms.Label labelAddress;
private System.Windows.Forms.Label labelCityStateProvincePostal;
private System.Windows.Forms.Label labelCountryRegion;
private System.Windows.Forms.Label labelEmail;
private System.ComponentModel.IContainer components;
// Define the constructor.
public HelloWorld()
{
InitializeComponent();
}
// Initialize the control elements.
public void InitializeComponent()
{
// Initialize the controls.
components = new System.ComponentModel.Container();
errorProvider1 = new System.Windows.Forms.ErrorProvider();
textName = new System.Windows.Forms.TextBox();
textAddress = new System.Windows.Forms.TextBox();
textCity = new System.Windows.Forms.TextBox();
textStateProvince = new System.Windows.Forms.TextBox();
textPostal = new System.Windows.Forms.TextBox();
textCountryRegion = new System.Windows.Forms.TextBox();
textEmail = new System.Windows.Forms.TextBox();
labelName = new System.Windows.Forms.Label();
labelAddress = new System.Windows.Forms.Label();
labelCityStateProvincePostal = new System.Windows.Forms.Label();
labelCountryRegion = new System.Windows.Forms.Label();
labelEmail = new System.Windows.Forms.Label();
// Set the tab order, text alignment, size, and location of the controls.
textName.Location = new System.Drawing.Point(120, 8);
textName.Size = new System.Drawing.Size(232, 20);
textName.TabIndex = 0;
textAddress.Location = new System.Drawing.Point(120, 32);
textAddress.Size = new System.Drawing.Size(232, 20);
textAddress.TabIndex = 1;
textCity.Location = new System.Drawing.Point(120, 56);
textCity.Size = new System.Drawing.Size(96, 20);
textCity.TabIndex = 2;
textStateProvince.Location = new System.Drawing.Point(216, 56);
textStateProvince.Size = new System.Drawing.Size(56, 20);
textStateProvince.TabIndex = 3;
textPostal.Location = new System.Drawing.Point(272, 56);
textPostal.Size = new System.Drawing.Size(80, 20);
textPostal.TabIndex = 4;
textCountryRegion.Location = new System.Drawing.Point(120, 80);
textCountryRegion.Size = new System.Drawing.Size(232, 20);
textCountryRegion.TabIndex = 5;
textEmail.Location = new System.Drawing.Point(120, 104);
textEmail.Size = new System.Drawing.Size(232, 20);
textEmail.TabIndex = 6;
labelName.Location = new System.Drawing.Point(8, 8);
labelName.Size = new System.Drawing.Size(112, 23);
labelName.Text = "Name:";
labelName.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
labelAddress.Location = new System.Drawing.Point(8, 32);
labelAddress.Size = new System.Drawing.Size(112, 23);
labelAddress.Text = "Address:";
labelAddress.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
labelCityStateProvincePostal.Location = new System.Drawing.Point(8, 56);
labelCityStateProvincePostal.Size = new System.Drawing.Size(112, 23);
labelCityStateProvincePostal.Text = "City, St/Prov. Postal:";
labelCityStateProvincePostal.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
labelCountryRegion.Location = new System.Drawing.Point(8, 80);
labelCountryRegion.Size = new System.Drawing.Size(112, 23);
labelCountryRegion.Text = "Country/Region:";
labelCountryRegion.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
labelEmail.Location = new System.Drawing.Point(8, 104);
labelEmail.Size = new System.Drawing.Size(112, 23);
labelEmail.Text = "email:";
labelEmail.TextAlign = System.Drawing.ContentAlignment.MiddleRight;
// Add the Validating and Validated handlers for textEmail.
textEmail.Validating += new System.ComponentModel.CancelEventHandler(textEmail_Validating);
textEmail.Validated += new System.EventHandler(textEmail_Validated);
// Add the controls to the user control.
Controls.AddRange(new System.Windows.Forms.Control[]
{
labelName,
labelAddress,
labelCityStateProvincePostal,
labelCountryRegion,
labelEmail,
textName,
textAddress,
textCity,
textStateProvince,
textPostal,
textCountryRegion,
textEmail
});
// Size the user control.
Size = new System.Drawing.Size(375, 150);
}
private void MyValidatingCode()
{
// Confirm there is text in the control.
if (textEmail.Text.Length == 0)
{
throw new Exception("Email address is a required field.");
}
// Confirm that there is a "." and an "@" in the e-mail address.
else if(textEmail.Text.IndexOf(".") == -1 || textEmail.Text.IndexOf("@") == -1)
{
throw new Exception("Email address must be valid e-mail address format." +
"\nFor example: 'someone@example.com'");
}
}
// Validate the data input by the user into textEmail.
private void textEmail_Validating(object sender, System.ComponentModel.CancelEventArgs e)
{
try
{
MyValidatingCode();
}
catch(Exception ex)
{
// Cancel the event and select the text to be corrected by the user.
e.Cancel = true;
textEmail.Select(0, textEmail.Text.Length);
// Set the ErrorProvider error with the text to display.
this.errorProvider1.SetError(textEmail,ex.Message);
}
}
private void textEmail_Validated(Object sender, System.EventArgs e)
{
//If all conditions have been met, clear the error provider of errors.
errorProvider1.SetError(textEmail, "");
}
}
}
これがHTMLページでactiveXコントロールを使用する方法です
<html>
<head>
</head>
<body>
<object name='Hello' style='display: none' id='Hello' classid='CLSID:42BBA00A-515E-45b5-9EAF-3827F7AEB4FA'
codebase='AxControls.cab#version=1,0,0,0' width="100%" height="100%">
</object>
</body>
</html>
次のようなものを追加すると、activeXが登録され、適切に実行されることは確かです
MessageBox.Show("HELLO");
ActiveX コントロールのコードで、html ページを呼び出しているときにこのメッセージが表示されます。とにかく、UIがまったく見えません。
どんな提案も素晴らしいでしょう。