Public Declare Function GetWindowTextA Lib "user32" (ByVal hWnd As Long, lpString As Any, ByVal cch As Long) As Long
Public Declare Function GetWindowTextLength Lib "user32" Alias "GetWindowTextLengthA" (ByVal hWnd As Long) As Long
Public Function GetText(ByVal hWnd As Long) As String
Dim TextStr() As Byte
Dim TextLen As Long
TextLen = GetWindowTextLength(hWnd)
'Debug.Print TextLen
If TextLen > 0 Then
ReDim TextStr(0 To TextLen)
TextLen = GetWindowTextA(hWnd, TextStr(0), TextLen + 1)
If TextLen > 0 Then
GetText = StrConv(LeftB(TextStr, TextLen), vbUnicode)
msdn:
GetWindowText
The GetWindowText function copies the text of the specified window's title bar (if it has one) into a buffer. If the specified window is a control, the text of the control is copied. However, GetWindowText cannot retrieve the text of a control in another application.
int GetWindowText(
HWND hWnd, // handle to window or control with text
LPTSTR lpString, // address of buffer for text
int nMaxCount // maximum number of characters to copy
);
Parameters
hWnd
Handle to the window or control containing the text.
lpString
Pointer to the buffer that will receive the text.
nMaxCount
Specifies the maximum number of characters to copy to the buffer, including the NULL character. If the text exceeds this limit, it is truncated.
Return Values
If the function succeeds, the return value is the length, in characters, of the copied string, not including the terminating null character. If the window has no title bar or text, if the title bar is empty, or if the window or control handle is invalid, the return value is zero. To get extended error information, callGetLastError.
This function cannot retrieve the text of an edit control in another application.
Remarks
If the target window is owned by the current process, GetWindowText causes a WM_GETTEXT message to be sent to the specified window or control. If the target window is owned by another process and has a caption, GetWindowText retrieves the window caption text. If the window does not have a caption, the return value is a null string.