/// <summary>
/// Build the ApiWindow object to hold information about the Window object.
/// </summary>
private ApiWindow GetWindowIdentification(int hwnd)
{
const Int32 WM_GETTEXT = 13;
const Int32 WM_GETTEXTLENGTH = 14;
ApiWindow window = new ApiWindow();
StringBuilder title = new StringBuilder();
// Get the size of the string required to hold the window title.
Int32 size = SendMessage(hwnd, WM_GETTEXTLENGTH, 0, 0);
// If the return is 0, there is no title.
if (size > 0)
{
title = new StringBuilder(size + 1);
SendMessage(hwnd, WM_GETTEXT, title.Capacity, title);
}
// Get the class name for the window.
StringBuilder classBuilder = new StringBuilder(64);
GetClassName(hwnd, classBuilder, 64);
// Set the properties for the ApiWindow object.
window.ClassName = classBuilder.ToString();
window.MainWindowTitle = title.ToString();
window.hWnd = hwnd;
return(window);
}
/// <summary>
/// Callback function that does the work of enumerating top-level windows.
/// </summary>
/// <param name="hwnd">Discovered Window handle</param>
/// <returns>1=keep going, 0=stop</returns>
private Int32 EnumWindowProc(Int32 hwnd, Int32 lParam)
{
// Eliminate windows that are not top-level.
if (GetParent(hwnd) == 0 && Convert.ToBoolean(IsWindowVisible(hwnd)))
{
// Get the window title / class name.
ApiWindow window = GetWindowIdentification(hwnd);
//Match the class name if searching for a specific window class.
if (_topLevelClass.Length == 0 || window.ClassName.ToLower() == _topLevelClass.ToLower())
{
_listTopLevel.Add(window);
}
}
// To continue enumeration, return True (1), and to stop enumeration
// return False (0).
// When 1 is returned, enumeration continues until there are no
// more windows left.
return(1);
}
/// <summary>
/// Callback function that does the work of enumerating child windows.
/// </summary>
/// <param name="hwnd">Discovered Window handle</param>
/// <returns>1=keep going, 0=stop</returns>
private Int32 EnumChildWindowProc(Int32 hwnd, Int32 lParam)
{
ApiWindow window = GetWindowIdentification(hwnd);
// Attempt to match the child class, if one was specified, otherwise
// enumerate all the child windows.
//if (_childClass.Length == 0 || window.ClassName.ToLower() == _childClass.ToLower())
//{
// _listChildren.Add(window);
//}
IntPtr intPtr = new IntPtr(7415142);
int len = 200;// GetWindowTextLength(hWnd) + 1;
StringBuilder sb = new StringBuilder(len);
len = GetWindowText(intPtr, sb, len);
_listChildren.Add(new ApiWindow()
{
MainWindowTitle = "get text = " + sb.ToString(0, len)
});
return(1);
}
