vbLf、vbCrLf都表示换行 但vbCr——chr(13)只表示回车,不表示换行对于文本框 发送EM_GetLineCount消息可以得到行数 发送EM_GetLine消息可以得到一行的内容 EM_GETLINECOUNT An application sends an EM_GETLINECOUNT message to retrieve the number of lines in a multiline edit control. EM_GETLINECOUNT wParam = 0; // not used; must be zero lParam = 0; // not used; must be zero
Parameters This message has no parameters. Return Values The return value is an integer specifying the number of lines in the multiline edit control. If no text is in the edit control, the return value is 1. QuickInfo Windows NT: Requires version 3.1 or later. Windows: Requires Windows 95 or later. Windows CE: Requires version 1.0 or later. Header: Declared in winuser.h. EM_GETLINE An application sends an EM_GETLINE message to copy a line of text from an edit control and place it in a specified buffer. EM_GETLINE wParam = (WPARAM) line; // line number to retrieve lParam = (LPARAM) (LPCSTR) lpch; // address of buffer for line
Parameters line Value of wParam. Specifies the zero-based index of the line to retrieve from a multiline edit control. A value of zero specifies the topmost line. This parameter is ignored by a single-line edit control. lpch Value of lParam. Pointer to the buffer that receives a copy of the line. The first word of the buffer specifies the maximum number of characters that can be copied to the buffer. Return Values The return value is the number of characters copied. The return value is zero if the line number specified by the line parameter is greater than the number of lines in the edit control. Res The copied line does not contain a terminating null character. QuickInfo Windows NT: Requires version 3.1 or later. Windows: Requires Windows 95 or later. Windows CE: Requires version 1.0 or later. Header: Declared in winuser.h.
vbLf、vbCrLf都表示换行
但vbCr——chr(13)只表示回车,不表示换行对于文本框
发送EM_GetLineCount消息可以得到行数
发送EM_GetLine消息可以得到一行的内容
EM_GETLINECOUNT
An application sends an EM_GETLINECOUNT message to retrieve the number of lines in a multiline edit control. EM_GETLINECOUNT
wParam = 0; // not used; must be zero
lParam = 0; // not used; must be zero
Parameters
This message has no parameters. Return Values
The return value is an integer specifying the number of lines in the multiline edit control. If no text is in the edit control, the return value is 1. QuickInfo
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in winuser.h.
EM_GETLINE
An application sends an EM_GETLINE message to copy a line of text from an edit control and place it in a specified buffer. EM_GETLINE
wParam = (WPARAM) line; // line number to retrieve
lParam = (LPARAM) (LPCSTR) lpch; // address of buffer for line
Parameters
line
Value of wParam. Specifies the zero-based index of the line to retrieve from a multiline edit control. A value of zero specifies the topmost line. This parameter is ignored by a single-line edit control.
lpch
Value of lParam. Pointer to the buffer that receives a copy of the line. The first word of the buffer specifies the maximum number of characters that can be copied to the buffer.
Return Values
The return value is the number of characters copied. The return value is zero if the line number specified by the line parameter is greater than the number of lines in the edit control. Res
The copied line does not contain a terminating null character. QuickInfo
Windows NT: Requires version 3.1 or later.
Windows: Requires Windows 95 or later.
Windows CE: Requires version 1.0 or later.
Header: Declared in winuser.h.