问题
I am basically writing a specialized macro player/recorder in C#. One thing I need to be able to do is wait for a pop up window (something like a Save As... dialog box) that I can then select to continue playing macro input into. Ideally, I would like to be able to poll for open windows and search through their titles for a matching window title. Obviously I can't use Processes.GetProcesses() because a dialog most likely will not show up as a new process.
Where do I look to get open windows and their titles?
回答1:
If you want to poll all open windows, you might use EnumWindows(). I didn't compile this code, but it should be pretty close to functional.
public class ProcessWindows
{
List<Window> visibleWindows = new List<Window>();
List<IntPtr> allWindows = new List<IntPtr>();
/// <summary>
/// Contains information about visible windows.
/// </summary>
public struct Window
{
public IntPtr Handle { get; set; }
public string Title { get; set; }
}
[DllImport("user32.dll")]
static extern int EnumWindows(EnumWindowsCallback lpEnumFunc, int lParam);
[DllImport("user32.dll", SetLastError = true, CharSet = CharSet.Auto)]
static extern int GetWindowLong(IntPtr hWnd, int nIndex);
[DllImport("user32.dll", CharSet = CharSet.Unicode, SetLastError = true)]
private static extern void GetWindowText(IntPtr hWnd, StringBuilder lpString, int nMaxCount);
delegate bool EnumWindowsCallback(IntPtr hwnd, int lParam);
public ProcessWindows()
{
int returnValue = EnumWindows(Callback, 0);
if (returnValue == 0)
{
throw new System.ComponentModel.Win32Exception(Marshal.GetLastWin32Error(), "EnumWindows() failed");
}
}
private bool Callback(IntPtr hwnd, int lParam)
{
const int WS_BORDER = 0x800000;
const int WS_VISIBLE = 0x10000000;
const int GWL_STYLE = (-16);
// You'll have to figure out which windows you want here...
int visibleWindow = WS_BORDER | WS_VISIBLE;
if ((GetWindowLong(hwnd, GWL_STYLE) & visibleWindow) == visibleWindow)
{
StringBuilder sb = new StringBuilder(100);
GetWindowText(hwnd, sb, sb.Capacity);
this.visibleWindows.Add(new Window()
{
Handle = hwnd,
Title = sb.ToString()
});
}
return true; //continue enumeration
}
public ReadOnlyCollection<Window> GetVisibleWindows()
{
return this.visibleWindows.AsReadOnly();
}
}
}
回答2:
I think you want FindWindow().
来源:https://stackoverflow.com/questions/4219933/c-sharp-how-to-wait-for-a-pop-up-window-and-select-it-for-input