下载本文示例代码
一个对话框有N个控件，怎样循环获得它们的RECT区域？假设控件的ID未知，N亦未知？我所知道的有GETDLGITEM（ID〕，但必须知道ID，可无法循环？
用API函数Enum
ChildWindows The EnumChildWindows function enumerates the child windows
that belong to the specified parent window by passing the handle of each child
window, in turn, to an application-defined callback function. EnumChildWindows
continues until the last child window is enumerated or the callback function
returns FALSE.
BOOL EnumChildWindows(
HWND hWndParent, // handle to parent window
WNDENUMPROC lpEnumFunc, // pointer to callback function
LPARAM lParam // application-defined value
);
Parameters
hWndParent
Identifies the parent window whose child windows
are to be enumerated.
lpEnumFunc
Points to an application-defined callback function.
For more information about the callback function,
see the EnumChildProc callback function.
lParam
Specifies a 32-bit, application-defined value to be
passed to the callback function.
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero.
一个对话框有N个控件，怎样循环获得它们的RECT区域？假设控件的ID未知，N亦未知？我所知道的有GETDLGITEM（ID〕，但必须知道ID，可无法循环？
用API函数Enum
ChildWindows The EnumChildWindows function enumerates the child windows
that belong to the specified parent window by passing the handle of each child
window, in turn, to an application-defined callback function. EnumChildWindows
continues until the last child window is enumerated or the callback function
returns FALSE.
BOOL EnumChildWindows(
HWND hWndParent, // handle to parent window
WNDENUMPROC lpEnumFunc, // pointer to callback function
LPARAM lParam // application-defined value
);
Parameters
hWndParent
Identifies the parent window whose child windows
are to be enumerated.
lpEnumFunc
Points to an application-defined callback function.
For more information about the callback function,
see the EnumChildProc callback function.
lParam
Specifies a 32-bit, application-defined value to be
passed to the callback function.
Return Values
If the function succeeds, the return value is nonzero.
If the function fails, the return value is zero.
下载本文示例代码
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