动态组合框和变量(特别是控制和值)

问题描述

我一直在尝试各种控件，以了解它们的操作方式.任何意见和/或建议将不胜感激.谢谢

如果我创建一个组合框，如:

I have been playing with different controls trying to learn how they operate. Any comments and/or suggestions will be greatly appreciated. Thanks

If I create a combobox like:

CComboBox *CaliberBox = new CComboBox;
       CaliberBox->Create(WS_CHILD | WS_VISIBLE |
       WS_VSCROLL | CBS_DROPDOWNLIST | CBS_SORT,
       CRect(20, 85, 130, 30), this, 0x1448);

       CaliberBox->AddString(L".223 Rem");
       CaliberBox->AddString(L".308 Win");
       CaliberBox->AddString(L".45/70 Gov't");

如何链接控件"变量和值"变量?

我知道我需要将以下内容添加到DoDataExchange中，但是我需要添加什么作为IDC?

DDX_Control(pDX，??????，m_wndCaliber);
DDX_CBString(pDX，??????，m_sCaliber);

当使用"new"运算符时，如果在对话框窗口中创建了CaliberBox，我认为不需要删除" CaliberBox.我说得对吗?

PS(确切地说，创建初始化器中的"0x1448"是什么?)我是从网上某个地方找到的一些例子得到的.

再次感谢
-DrB

How do I link a ''control'' variable and a ''value'' variable?

I know I need to add the following to the DoDataExchange, but what do I need to add as the IDC ?

DDX_Control(pDX, ??????, m_wndCaliber);
DDX_CBString(pDX, ??????, m_sCaliber);

and when using the ''new'' operator, I don''t think I need to ''delete'' the CaliberBox if it''s created in a dialog window. Am I correct?

PS (What exactly, is ''0x1448'' in the create initializer?) I got this from some example I found somewhere online.

Thanks again
-DrB

推荐答案

#define IDC_CALIBERBOX 0x1448

然后在创建"中使用IDC_CALIBERBOX而不是实际数字(这样做的原因是为了避免某些更改问题.例如，如果您只需要更改位置，则必须在宏定义中进行更改)

并在您的
中

then in Create use IDC_CALIBERBOX instead the actual number(reason to do this to avoid some issue of change. say if you need to change only place you will have to change is in the macro definition)

and in your

DDX_Control(pDX,IDC_CALIBERBOX, m_wndCaliber);
DDX_CBString(pDX,IDC_CALIBERBOX, m_sCaliber);

CaliberBox->AddString(L".223 Rem");
     CaliberBox->AddString(L".308 Win");
     CaliberBox->AddString(L".45/70 Gov''t");

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