通过c语言按internet explorer“文件下载对话框”的保存按钮#

尝试以下似乎对我有用的方法:

IntPtr hwnd = FindWindow(null, "File Download");
IntPtr hokBtn = FindWindowEx(hwnd, null, "Button", "Cancel");
uint id = GetDlgCtrlID(hokBtn);
SetActiveWindow(hwnd);
IntPtr res = SendMessage(hokBtn, (int)0x00F5, 0, IntPtr.Zero);
if (res.ToInt32() == 1)
    MessageBox.Show("success");

我建议你检查每个函数的返回值。

这在C++中是有效的 请注意,“保存”按钮的名称为“&“保存”而不是“保存”

CString Title;
    Title=_T("File Download");
    HWND FEX =  ::FindWindowEx( NULL,NULL,NULL,Title);
    if (FEX != NULL)
    {

        //press the Save button on the dialog.
        HWND hokBtn = ::FindWindowEx(FEX, NULL, L"Button", L"&Save");
        if (hokBtn != NULL)
        {

            UINT id = ::GetDlgCtrlID(hokBtn);
            ::SetActiveWindow(hokBtn);
            ::PostMessage(hokBtn, WM_KEYDOWN, 0x20, 0);
            ::PostMessage(hokBtn, WM_KEYUP, 0x20, 0);
        }

}

嗯,你必须找到一个标题为下载对话框的窗口。然后你必须找到标题为下载按钮/的窗口,然后发送到该窗口单击消息

  BM_CLICK = 0x00F5

  [DllImport("user32.dll", CharSet = CharSet.Auto)]
    public static extern IntPtr FindWindowEx(IntPtr parent, IntPtr next, string sClassName, IntPtr sWindowTitle);

  [DllImport("user32.dll", ExactSpelling = true, CharSet = CharSet.Auto)]
    public static extern uint GetDlgCtrlID(IntPtr hWnd); 

  [DllImport("user32.dll", CharSet = CharSet.Auto)]
    public static extern IntPtr SendMessage(IntPtr hWnd, int msg, int wParam, IntPtr lParam); 

    //hDialog  - handle of dialog window. idBtn - Id of button
     public static bool ClickButtonOnDialog(IntPtr hDialog, UInt32 idBtn)
    {
        IntPtr res = IntPtr.Zero;
        uint id;
        IntPtr hOkBtn = IntPtr.Zero;
        int attempt = 0;
        do
        {
            Thread.Sleep(300);
            //searching for button
            hOkBtn = User32.FindWindowEx(hDialog, hOkBtn, "Button", IntPtr.Zero);
            id = User32.GetDlgCtrlID(hOkBtn);
            attempt++;
        } while (id != idBtn && attempt < 20);
        if (!hOkBtn.Equals(IntPtr.Zero))
        {
            //click the button
            res = User32.SendMessage(hOkBtn, (int)WindowsMessages.BM_CLICK, 1,  IntPtr.Zero);
        }
        if (res.ToInt32() == 1)
            return true;
        return false;
    }

您可以使用winspector(spy++的模拟程序)。这是非常有用的实用工具。你可以发现许多关于windows的东西;)

我找到了一种在WindowsXP中使用InternetExplorer6的方法。

'ButtonHwnd is the pointer to the Save button
Private Declare Function SetCursorPos Lib "user32" (ByVal X As Integer, ByVal Y As Integer) As Long
Private Declare Sub mouse_event Lib "user32.dll" (ByVal dwFlags As Long, ByVal dx As Long, ByVal dy As Long, ByVal cButtons As Long, ByVal dwExtraInfo As Long)
Private Const MOUSEEVENTF_LEFTDOWN As Long = &H2
Private Const MOUSEEVENTF_LEFTUP As Long = &H4
Dim pos As RECT
' We get the button position
GetWindowRect ButtonHwnd, pos

' We simulate an entering of the cursor in the button. IE think this is a human :-).
' We need three steps: out, entering and in.
' Out
SetCursorPos (pos.Left - 10), (pos.Top - 10)
Sleep 100
' Entering
SetCursorPos pos.Left, pos.Top
Sleep 100
' In
SetCursorPos (pos.Left + pos.Right) / 2, (pos.Top + pos.Bottom) / 2

' We do clic with the left button. You can use SendInput instead
' With 400 miliseconds it works.
mouse_event MOUSEEVENTF_LEFTDOWN, (pos.Left + pos.Right) / 2, (pos.Top + pos.Bottom) / 2, 0, 0
Sleep 400
mouse_event MOUSEEVENTF_LEFTUP, (pos.Left + pos.Right) / 2, (pos.Top + pos.Bottom) / 2, 0, 0

拜托,告诉我这对你有用吗。

我在StackOverflow上找到了大部分: How to handle Message Boxes while using webbrowser in C#?

using System.Runtime.InteropServices; //for the dll import (to press a key)

[DllImport("user32.dll", SetLastError = true)]
static extern IntPtr FindWindowEx(IntPtr hwndParent, IntPtr hwndChildAfter, string lpszClass, string lpszWindow);

[DllImport("user32.dll", EntryPoint = "FindWindow", SetLastError = true)]
private static extern IntPtr FindWindow(string lpClassName, string lpWindowName);

[DllImport("user32.dll", CharSet = CharSet.Auto)]
static extern IntPtr SendMessage(IntPtr hWnd, UInt32 Msg, IntPtr wParam, IntPtr lParam);

private async void downloadstuff()
{
await Task.Delay(40000);  //i need this delay, but you might not :)
{
    IntPtr hwnd = FindWindow("#32770", "File Download");  //this is the window it finds
    hwnd = FindWindowEx(hwnd, IntPtr.Zero, "Button", "&Save");  //this is the button to pres
    uint message = 0xf5;
    SendMessage(hwnd, message, IntPtr.Zero, IntPtr.Zero);
}
await Task.Delay(1000);
{
    IntPtr hwnd2 = FindWindow("#32770", "Save As");
    hwnd2 = FindWindowEx(hwnd2, IntPtr.Zero, "Button", "&Save");
    uint message2 = 0xf5;
    SendMessage(hwnd2, message2, IntPtr.Zero, IntPtr.Zero);
}
await Task.Delay(1000);                //i press it anyway, just in case :)
{   //this is the download complete box (if its checked it doesn't show up)
    IntPtr hwnd3 = FindWindow("#32770", "Download complete");
    hwnd3 = FindWindowEx(hwnd3, IntPtr.Zero, "Button", "Close");
    uint message3 = 0xf5;
    SendMessage(hwnd3, message3, IntPtr.Zero, IntPtr.Zero);
}
}

IntPtr hwnd = FindWindow(null, "File Download");
IntPtr hokBtn = FindWindowEx(hwnd, null, "Button", "Cancel");
uint id = GetDlgCtrlID(hokBtn);
SetActiveWindow(hwnd);
IntPtr res = SendMessage(hokBtn, (int)0x00F5, 0, IntPtr.Zero);
if (res.ToInt32() == 1)
    MessageBox.Show("success");

如果我没有错的话,那实际上是个假阳性;默认的故障保护行为似乎是关闭对话框。相反,这是一个积极的,取消按钮可以点击,但试图点击打开或保存将产生相同的,但在该上下文中不想要的响应。。。

建议的代码都不起作用,我最终使用AutoIt脚本关闭了一个打印对话框,代码如下:

Local $hWnd = WinWait("[CLASS:#32770]", "Print", 20)
WinActivate($hWnd)
WinWaitActive("[CLASS:#32770]", "Print", 10)
Sleep(100)
Send("{ENTER}")