MFC OnTimer() 方法不起作用
我创建了一个基于 MFC 对话框的应用程序，并想在窗体上添加计时器。但事实证明，MFC 与 .NET Windows 窗体不同。
我在消息映射中添加了 ON_WM_TIMER() 。并添加了 CMyDialog::OnTimer(UINT_PTR x) 的函数定义 { 但
我在 VS2005 中遇到编译器错误。我不知道我做错了什么。 “错误 C2509：‘OnTimer’：未在‘CMyDialog’中声明成员函数”
非常感谢帮助。谢谢。
I created an MFC dialog based app and wanted to add timer on the form. But it turns out that MFC is different than the .NET windows forms.
I added the ON_WM_TIMER() in the messagemap. and added the function definition for CMyDialog::OnTimer(UINT_PTR x)
{
}
But I am getting a compiler error in VS2005. I do not know what i am doing wrong.
"error C2509: 'OnTimer' : member function not declared in 'CMyDialog'"
Help is greatly appreciated. Thanks.
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显然，您忘记在
MyDialog.h中的CMyDialog声明中声明该函数：请注意，afx_msg 纯粹是提供信息的，可以省略。
Obviously, you forgot to declare the function in
MyDialog.h, inCMyDialogdeclaration:Note that afx_msg is purely informative and can be omitted.
ON_WM_TIMER 地图宏的文档表明您的做法是正确的事物。我唯一能想到的是您已将
afx_msg限定符从函数定义中删除。编辑：冒着陈述显而易见的风险，您是否还在类声明中包含了 OnTimer 函数的原型？
The documentation for the ON_WM_TIMER map macro shows that you're doing the right thing. The only thing I can think of is that you have left the
afx_msgqualifier off of your function definition.Edit: At the risk of stating the obvious, did you also include the prototype of the OnTimer function in your class declaration?