C# 将消息发送到窗口句柄 我尝试使用sEndoMeST将消息从C++应用程序传递到C＜< /p> int _tmain(int argc, _TCHAR* argv[]) { COPYDATASTRUCT cpd; cpd.dwData = 0; LPCWSTR strDataToSend = L"http://google.com";; cpd.cbData = (wcslen(strDataToSend) + 1) * 2; cpd.lpData = (PVOID)strDataToSend; SendMessage((HWND)0x0020073C,5555,0,(LPARAM)&cpd); return 0; } public struct COPYDATASTRUCT { public IntPtr dwData; public int cbData; [MarshalAs(UnmanagedType.LPStr)] public string lpData; } protected override void WndProc(ref Message m) { // Listen for operating system messages. switch (m.Msg) { // The WM_ACTIVATEAPP message occurs when the application // becomes the active application or becomes inactive. case 5555: COPYDATASTRUCT mystr = new COPYDATASTRUCT(); Type mytype = mystr.GetType(); mystr = (COPYDATASTRUCT)m.GetLParam(mytype); MessageBox.Show ( mystr.cbData.ToString()); MessageBox.Show(mystr.lpData); break; } base.WndProc(ref m); } case WM_COPYDATA: COPYDATASTRUCT mystr = new COPYDATASTRUCT(); mystr = (COPYDATASTRUCT)Marshal.PtrToStructure(m.LParam, typeof(COPYDATASTRUCT)); if (mystr.cbData > 0) { byte[] data = new byte[mystr.cbData]; Marshal.Copy(mystr.lpData, data, 0, mystr.cbData); Encoding unicodeStr = Encoding.Unicode; char[] myString = unicodeStr.GetChars(data); string returnText = new string(myString); MessageBox.Show("Text is " + returnText); } break;
我尝试了SendMessageW，我还硬编码了句柄，这是正确的，我正在回电话，但没有得到任何数据 我的C#申请书是这样的C# 将消息发送到窗口句柄 我尝试使用sEndoMeST将消息从C++应用程序传递到C＜< /p> int _tmain(int argc, _TCHAR* argv[]) { COPYDATASTRUCT cpd; cpd.dwData = 0; LPCWSTR strDataToSend = L"http://google.com";; cpd.cbData = (wcslen(strDataToSend) + 1) * 2; cpd.lpData = (PVOID)strDataToSend; SendMessage((HWND)0x0020073C,5555,0,(LPARAM)&cpd); return 0; } public struct COPYDATASTRUCT { public IntPtr dwData; public int cbData; [MarshalAs(UnmanagedType.LPStr)] public string lpData; } protected override void WndProc(ref Message m) { // Listen for operating system messages. switch (m.Msg) { // The WM_ACTIVATEAPP message occurs when the application // becomes the active application or becomes inactive. case 5555: COPYDATASTRUCT mystr = new COPYDATASTRUCT(); Type mytype = mystr.GetType(); mystr = (COPYDATASTRUCT)m.GetLParam(mytype); MessageBox.Show ( mystr.cbData.ToString()); MessageBox.Show(mystr.lpData); break; } base.WndProc(ref m); } case WM_COPYDATA: COPYDATASTRUCT mystr = new COPYDATASTRUCT(); mystr = (COPYDATASTRUCT)Marshal.PtrToStructure(m.LParam, typeof(COPYDATASTRUCT)); if (mystr.cbData > 0) { byte[] data = new byte[mystr.cbData]; Marshal.Copy(mystr.lpData, data, 0, mystr.cbData); Encoding unicodeStr = Encoding.Unicode; char[] myString = unicodeStr.GetChars(data); string returnText = new string(myString); MessageBox.Show("Text is " + returnText); } break;,c#,c++,sendmessage,C#,C++,Sendmessage,我尝试了SendMessageW，我还硬编码了句柄，这是正确的，我正在回电话，但没有得到任何数据 我的C#申请书是这样的 int _tmain(int argc, _TCHAR* argv[]) { COPYDATASTRUCT cpd; cpd.dwData = 0; LPCWSTR strDataToSend = L"http://google.com";; cpd.cbData = (wcslen(strDataToSend) + 1) * 2; cp
int _tmain(int argc, _TCHAR* argv[])
{
COPYDATASTRUCT cpd;
cpd.dwData = 0;
LPCWSTR strDataToSend = L"http://google.com";;
cpd.cbData = (wcslen(strDataToSend) + 1) * 2;
cpd.lpData = (PVOID)strDataToSend;
SendMessage((HWND)0x0020073C,5555,0,(LPARAM)&cpd);
return 0;
}
public struct COPYDATASTRUCT
{
public IntPtr dwData;
public int cbData;
[MarshalAs(UnmanagedType.LPStr)]
public string lpData;
}
protected override void WndProc(ref Message m)
{
// Listen for operating system messages.
switch (m.Msg)
{
// The WM_ACTIVATEAPP message occurs when the application
// becomes the active application or becomes inactive.
case 5555:
COPYDATASTRUCT mystr = new COPYDATASTRUCT();
Type mytype = mystr.GetType();
mystr = (COPYDATASTRUCT)m.GetLParam(mytype);
MessageBox.Show ( mystr.cbData.ToString());
MessageBox.Show(mystr.lpData);
break;
}
base.WndProc(ref m);
}
case WM_COPYDATA:
COPYDATASTRUCT mystr = new COPYDATASTRUCT();
mystr = (COPYDATASTRUCT)Marshal.PtrToStructure(m.LParam, typeof(COPYDATASTRUCT));
if (mystr.cbData > 0)
{
byte[] data = new byte[mystr.cbData];
Marshal.Copy(mystr.lpData, data, 0, mystr.cbData);
Encoding unicodeStr = Encoding.Unicode;
char[] myString = unicodeStr.GetChars(data);
string returnText = new string(myString);
MessageBox.Show("Text is " + returnText);
}
break;
C#代码
我对源代码做了一点修改，它可以正常工作。从C++代码中我使用这个调用< /p>
SendMessage（（HWND）0x0020073C，WM_COPYDATA，0，（LPARAM）和cpd）
在C#应用程序中，我使用了以下内容
public const int WM_COPYDATA = 0x004A;
而且COPYDATASTRUCT
[StructLayout(LayoutKind.Sequential)]
public struct COPYDATASTRUCT
{
public IntPtr dwData;
public int cbData;
public IntPtr lpData;
}
消息处理程序修改如下
int _tmain(int argc, _TCHAR* argv[])
{
COPYDATASTRUCT cpd;
cpd.dwData = 0;
LPCWSTR strDataToSend = L"http://google.com";;
cpd.cbData = (wcslen(strDataToSend) + 1) * 2;
cpd.lpData = (PVOID)strDataToSend;
SendMessage((HWND)0x0020073C,5555,0,(LPARAM)&cpd);
return 0;
}
public struct COPYDATASTRUCT
{
public IntPtr dwData;
public int cbData;
[MarshalAs(UnmanagedType.LPStr)]
public string lpData;
}
protected override void WndProc(ref Message m)
{
// Listen for operating system messages.
switch (m.Msg)
{
// The WM_ACTIVATEAPP message occurs when the application
// becomes the active application or becomes inactive.
case 5555:
COPYDATASTRUCT mystr = new COPYDATASTRUCT();
Type mytype = mystr.GetType();
mystr = (COPYDATASTRUCT)m.GetLParam(mytype);
MessageBox.Show ( mystr.cbData.ToString());
MessageBox.Show(mystr.lpData);
break;
}
base.WndProc(ref m);
}
case WM_COPYDATA:
COPYDATASTRUCT mystr = new COPYDATASTRUCT();
mystr = (COPYDATASTRUCT)Marshal.PtrToStructure(m.LParam, typeof(COPYDATASTRUCT));
if (mystr.cbData > 0)
{
byte[] data = new byte[mystr.cbData];
Marshal.Copy(mystr.lpData, data, 0, mystr.cbData);
Encoding unicodeStr = Encoding.Unicode;
char[] myString = unicodeStr.GetChars(data);
string returnText = new string(myString);
MessageBox.Show("Text is " + returnText);
}
break;
我对源代码做了一点修改，它可以正常工作。从C++代码中我使用这个调用< /p>
SendMessage（（HWND）0x0020073C，WM_COPYDATA，0，（LPARAM）和cpd）
在C#应用程序中，我使用了以下内容
public const int WM_COPYDATA = 0x004A;
而且COPYDATASTRUCT
[StructLayout(LayoutKind.Sequential)]
public struct COPYDATASTRUCT
{
public IntPtr dwData;
public int cbData;
public IntPtr lpData;
}
消息处理程序修改如下
int _tmain(int argc, _TCHAR* argv[])
{
COPYDATASTRUCT cpd;
cpd.dwData = 0;
LPCWSTR strDataToSend = L"http://google.com";;
cpd.cbData = (wcslen(strDataToSend) + 1) * 2;
cpd.lpData = (PVOID)strDataToSend;
SendMessage((HWND)0x0020073C,5555,0,(LPARAM)&cpd);
return 0;
}
public struct COPYDATASTRUCT
{
public IntPtr dwData;
public int cbData;
[MarshalAs(UnmanagedType.LPStr)]
public string lpData;
}
protected override void WndProc(ref Message m)
{
// Listen for operating system messages.
switch (m.Msg)
{
// The WM_ACTIVATEAPP message occurs when the application
// becomes the active application or becomes inactive.
case 5555:
COPYDATASTRUCT mystr = new COPYDATASTRUCT();
Type mytype = mystr.GetType();
mystr = (COPYDATASTRUCT)m.GetLParam(mytype);
MessageBox.Show ( mystr.cbData.ToString());
MessageBox.Show(mystr.lpData);
break;
}
base.WndProc(ref m);
}
case WM_COPYDATA:
COPYDATASTRUCT mystr = new COPYDATASTRUCT();
mystr = (COPYDATASTRUCT)Marshal.PtrToStructure(m.LParam, typeof(COPYDATASTRUCT));
if (mystr.cbData > 0)
{
byte[] data = new byte[mystr.cbData];
Marshal.Copy(mystr.lpData, data, 0, mystr.cbData);
Encoding unicodeStr = Encoding.Unicode;
char[] myString = unicodeStr.GetChars(data);
string returnText = new string(myString);
MessageBox.Show("Text is " + returnText);
}
break;
您试图做的是一些基本的IPC（进程间通信）
<>这不是C语言的问题，但是C++是。p>
也许一些基本的COM会对你有所帮助。这非常简单，您不再需要使用SendMessage、窗口句柄等
您试图做的是一些基本的IPC（进程间通信）
<>这不是C语言的问题，但是C++是。p>
也许一些基本的COM会对你有所帮助。这非常简单，您不再需要使用SendMessage、窗口句柄等
这辆车看起来和你的不一样。（例如，LayoutKind.Sequential
属性）。注释指的是WM\u ACTIVATEAPP
，COPYDATASTRUCT
建议WM\u COPYDATA
，但5555两者都不是。是的，你是对的。。。。非常感谢。。。。。我没有想到。。。。谢谢你的HVD看起来和你的不一样。（例如，LayoutKind.Sequential
属性）。注释指的是WM\u ACTIVATEAPP
，COPYDATASTRUCT
建议WM\u COPYDATA
，但5555两者都不是。是的，你是对的。。。。非常感谢。。。。。我没有想到。。。。谢谢你的hvd