我正在尝试使用C#创建Skype的附件。我不想使用Skype4COM,因为我希望有消息之类的经验。不幸的是,这些消息使我震惊。我有水泵和这样的装置。它们都正常工作,并且我的应用程序成功将“ APIDiscover”消息发送到Skype,获得了“ PendingAuth”响应,然后获得了“ AttachSuccess”消息。但是,当我尝试向Skype发送“ ping”(应该向其回复“ pong”)时,没有任何反应。
SendMessage的返回码为0,但Marshall.GetLastWin32Error为1400(无效句柄)。使用AttachSuccess方法返回了该句柄。等效的C ++代码确实可以工作,所以我很茫然。
首先是我用作指导的C ++代码:
这是(减少的)消息泵。您可以忽略所有内容,但可以放在//
static LRESULT APIENTRY SkypeAPITest_Windows_WindowProc(
HWND hWindow, UINT uiMessage, WPARAM uiParam, LPARAM ulParam)
{
LRESULT lReturnCode;
bool fIssueDefProc;
lReturnCode=0;
fIssueDefProc=false;
switch(uiMessage)
{
case WM_COPYDATA:
if( hGlobal_SkypeAPIWindowHandle==(HWND)uiParam )
{
PCOPYDATASTRUCT poCopyData=(PCOPYDATASTRUCT)ulParam;
printf( "Message from Skype(%u): %.*s\n", poCopyData->dwData, poCopyData->cbData, poCopyData->lpData);
lReturnCode=1;
}
break;
default:
if( uiMessage==uiGlobal_MsgID_SkypeControlAPIAttach )
{
switch(ulParam)
{
case SKYPECONTROLAPI_ATTACH_SUCCESS:
printf("!!! Connected; to terminate issue #disconnect\n");
hGlobal_SkypeAPIWindowHandle=(HWND)uiParam;//<---- Right here is where we receive the handle from Skype.
break;
}
if( fIssueDefProc )
lReturnCode=DefWindowProc( hWindow, uiMessage, uiParam, ulParam);
return(lReturnCode);
}
这是(再次愚蠢的)“发送消息”代码
void __cdecl Global_InputProcessingThread(void *)
{
static char acInputRow[1024];
bool fProcessed;
if( SendMessageTimeout( HWND_BROADCAST, uiGlobal_MsgID_SkypeControlAPIDiscover, (WPARAM)hInit_MainWindowHandle, 0, SMTO_ABORTIFHUNG, 1000, NULL)!=0 )
{
while(Global_Console_ReadRow( acInputRow, sizeof(acInputRow)-1))
{
if( fProcessed==false && hGlobal_SkypeAPIWindowHandle!=NULL )
{
COPYDATASTRUCT oCopyData;
// send command to skype
oCopyData.dwData=0;
oCopyData.lpData=acInputRow;
oCopyData.cbData=strlen(acInputRow)+1;
if( oCopyData.cbData!=1 )
{
if( SendMessage( hGlobal_SkypeAPIWindowHandle, WM_COPYDATA, (WPARAM)hInit_MainWindowHandle, (LPARAM)&oCopyData)==FALSE )
{
hGlobal_SkypeAPIWindowHandle=NULL;
printf("!!! Disconnected\n");
}
}
}
}
}
SendMessage( hInit_MainWindowHandle, WM_CLOSE, 0, 0);
SetEvent(hGlobal_ThreadShutdownEvent);
fGlobal_ThreadRunning=false;
}
现在是我的C#
public bool PreFilterMessage(ref Message m)
{
Console.WriteLine(m.ToString());
if (m.Msg == WM_COPYDATA && SkypeAPIWindowHandle == m.WParam)
{
SkypeMessage(m);
return true;
}
if (m.Msg == MsgApiAttach)
{
switch (m.LParam.ToInt32())
{
case (int)SkypeControlAPIAttach.SUCCESS:
SkypeAPIWindowHandle = m.WParam; //Here's where we set the Skype Handle
AttachSuccess(m);
return true;
}
}
return false; //Defer all other messages
}
这是我的DLL导入和发送代码
[DllImport("user32.dll", CharSet = CharSet.Auto, SetLastError = false)]
static extern IntPtr SendMessageA(IntPtr hWnd, UInt32 Msg, IntPtr wParam, ref MsgHelper.COPYDATASTRUCT lParam);
public static void Command(string c)
{
if (c.Last() != '\0')
c += "\0"; //Make string null terminated
Console.WriteLine();
MsgHelper.COPYDATASTRUCT cda = new MsgHelper.COPYDATASTRUCT();
cda.dwData = new IntPtr(0);
cda.lpData = c;
cda.cbData = c.Length + 1;
Marshal.GetLastWin32Error(); //Clear last error
Console.WriteLine(SendMessageA(mHelper.SkypeAPIWindowHandle, MsgHelper.WM_COPYDATA, IntPtr.Zero, ref cda));
Console.WriteLine(Marshal.GetLastWin32Error());
}
COPYDATASTRUCT是:
public struct COPYDATASTRUCT
{
public IntPtr dwData;
public int cbData;
[MarshalAs(UnmanagedType.LPStr)]
public string lpData;
}
我认为这就是一切。让我知道我是否忘记了什么。
我为什么要买1400的任何想法?
最佳答案
好吧,正如我所期望的,它很小。 Skype API说(不要问我为什么),处理消息的结果必须不同于零(0),否则Skype认为连接已断开。
并且,当然,消息的默认返回值为0。Skype将从初始ApiConnectSuccess消息中获取零,然后立即关闭句柄。当然,当我尝试使用手柄时会产生1400!所以只需设置
m.Result = new IntPtr(1);
固定它。现在,我收到“访问被拒绝”错误。真有趣
编辑:通过将IntPtr.Zero替换为我的句柄,修复了“访问被拒绝”(Win32错误5):
SendMessageA(mHelper.SkypeAPIWindowHandle, MsgHelper.WM_COPYDATA, mHelper.MyHandle, ref cda)
两个答案合而为一!
关于c# - C#SendMessage和Skype的困境,我们在Stack Overflow上找到一个类似的问题:https://stackoverflow.com/questions/10876296/