我想将开销最小化。现在我有：

// Launch a Message Box with advice to the user
DialogResult result = MessageBox::Show("This may take awhile, do you wish to continue?", "Warning", MessageBoxButtons::YesNo, MessageBoxIcon::Exclamation);

// The test will only be launched if the user has selected Yes on the Message Box
if(result == DialogResult::Yes)
{
    // Execute code
}

不幸的是，我的客户希望使用"继续"和"取消"来代替默认的"是"和"否"按钮文字。似乎应该有一种简单的方法可以做到这一点。

解决方案

回答

我们可以使用"确定"和"取消"

通过用MessageBoxButtons :: OKCancel替换MessageBoxButtons :: YesNo

MessageBoxButtons枚举

否则，我们将不得不创建一个新表单，因为我认为Enum不能扩展。

回答

从我所能找到的一切来看，科林看起来是正确的。这是我用来实现最初目标的代码。我通常不是托管C ++程序员，所以任何编辑都将不胜感激。

CustomMessageBox.h：

using namespace System::Windows::Forms;

/// <summary>
/// A message box for the test. Used to ensure user wishes to continue before starting the test.
/// </summary>
public ref class CustomMessageBox : Form
{
private:
    /// Used to determine which button is pressed, default action is Cancel
    static String^ Button_ID_ = "Cancel";

    // GUI Elements
    Label^ warningLabel_;
    Button^ continueButton_;
    Button^ cancelButton_;

    // Button Events
    void CustomMessageBox::btnContinue_Click(System::Object^ sender, EventArgs^ e);
    void CustomMessageBox::btnCancel_Click(System::Object^ sender, EventArgs^ e);

    // Constructor is private. CustomMessageBox should be accessed through the public ShowBox() method
    CustomMessageBox();

public:
    /// <summary>
    /// Displays the CustomMessageBox and returns a string value of "Continue" or "Cancel"
    /// </summary>
    static String^ ShowBox();
};

CustomMessageBox.cpp：

#include "StdAfx.h"
#include "CustomMessageBox.h"

using namespace System::Windows::Forms;
using namespace System::Drawing;

CustomMessageBox::CustomMessageBox()
{
    this->Size = System::Drawing::Size(420, 150);
    this->Text="Warning";
    this->AcceptButton=continueButton_;
    this->CancelButton=cancelButton_;
    this->FormBorderStyle= ::FormBorderStyle::FixedDialog;
    this->StartPosition= FormStartPosition::CenterScreen;
    this->MaximizeBox=false;
    this->MinimizeBox=false;
    this->ShowInTaskbar=false;

    // Warning Label
    warningLabel_ = gcnew Label();
    warningLabel_->Text="This may take awhile, do you wish to continue?";
    warningLabel_->Location=Point(5,5);
    warningLabel_->Size=System::Drawing::Size(400, 78);
    Controls->Add(warningLabel_);

    // Continue Button
    continueButton_ = gcnew Button();
    continueButton_->Text="Continue";
    continueButton_->Location=Point(105,87);
    continueButton_->Size=System::Drawing::Size(70,22);
    continueButton_->Click += gcnew System::EventHandler(this, &CustomMessageBox::btnContinue_Click);
    Controls->Add(continueButton_);

    // Cancel Button
    cancelButton_ = gcnew Button();
    cancelButton_->Text="Cancel";
    cancelButton_->Location=Point(237,87);
    cancelButton_->Size=System::Drawing::Size(70,22);
    cancelButton_->Click += gcnew System::EventHandler(this, &CustomMessageBox::btnCancel_Click);
    Controls->Add(cancelButton_);
}

/// <summary>
/// Displays the CustomMessageBox and returns a string value of "Continue" or "Cancel", depending on the button
/// clicked.
/// </summary>
String^ CustomMessageBox::ShowBox()
{
    CustomMessageBox^ box = gcnew CustomMessageBox();
    box->ShowDialog();

    return Button_ID_;
}

/// <summary>
/// Event handler: When the Continue button is clicked, set the Button_ID_ value and close the CustomMessageBox.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
void CustomMessageBox::btnContinue_Click(System::Object^ sender, EventArgs^ e)
{
    Button_ID_ = "Continue";
    this->Close();
}

/// <summary>
/// Event handler: When the Cancel button is clicked, set the Button_ID_ value and close the CustomMessageBox.
/// </summary>
/// <param name="sender">The source of the event.</param>
/// <param name="e">The <see cref="System.EventArgs"/> instance containing the event data.</param>
void CustomMessageBox::btnCancel_Click(System::Object^ sender, EventArgs^ e)
{
    Button_ID_ = "Cancel";
    this->Close();
}

然后最后是对原始代码的修改：

// Launch a Message Box with advice to the user
String^ result = CustomMessageBox::ShowBox();

// The test will only be launched if the user has selected Continue on the Message Box
if(result == "Continue")
{
    // Execute Code
}