ShellExecuteEx(&ShExecInfo)让它启动，再发消息给它的问题.

[huabinsir]

HWND m_Hwnd;
bool bRet;
m_Hwnd = ::FindWindow(NULL, _T("Message"));

if (m_Hwnd == NULL) //INVALID_HANDLE_VALUE
{

SHELLEXECUTEINFO ShExecInfo = {0};
ShExecInfo.cbSize = sizeof(SHELLEXECUTEINFO);
ShExecInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
ShExecInfo.hwnd = NULL;
ShExecInfo.lpVerb = NULL;
ShExecInfo.lpFile = _T("\\Storage Card\\message.exe");
ShExecInfo.lpParameters = _T("");
ShExecInfo.lpDirectory = NULL;
ShExecInfo.nShow = SW_SHOW;
ShExecInfo.hInstApp = NULL;
bRet = ShellExecuteEx(&ShExecInfo);
}

//if (bRet == true)
{
Sleep(0);
::BringWindowToTop(m_Hwnd);
Sleep(0);
::SendMessage(m_Hwnd, WM_COMMON_MESSAGE, (WPARAM)8888, (LPARAM)6666);
}

我想启动message.exe后，发消息给message.exe, 让它做另一件事情(或到另一个状态).


如果message.exe已经启动，发消息给message.exe，可以。

如果message.exe没有启动，ShellExecuteEx(&ShExecInfo)让它启动，再发消息给message.exe，则不可以。

为什么会这样?

[一笑拔剑]

[Quote=引用楼主 huabinsir 的帖子:]
HWND m_Hwnd;
bool bRet;
m_Hwnd = ::FindWindow(NULL, _T("Message"));

if (m_Hwnd == NULL) //INVALID_HANDLE_VALUE
{

SHELLEXECUTEINFO ShExecInfo = {0};
ShExecInfo.cbSize = sizeof(SHELLEXECUTEINFO);
ShExecInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
ShExecInfo.hwnd = NULL;
ShExecInfo.lpVerb = NULL;
ShExecInfo.lpFile = _T("\\Storage Ca…
[/Quote]
启动后sleep一下

等点时间可能你发出命令的时候

程序还没有完全启动完成

[huabinsir]

HWND m_Hwnd;
bool bRet;
m_Hwnd = ::FindWindow(NULL, _T("Message"));

if (m_Hwnd == NULL) //INVALID_HANDLE_VALUE
{
SHELLEXECUTEINFO ShExecInfo = {0};
ShExecInfo.cbSize = sizeof(SHELLEXECUTEINFO);
ShExecInfo.fMask = SEE_MASK_NOCLOSEPROCESS;
ShExecInfo.hwnd = NULL;
ShExecInfo.lpVerb = NULL;
ShExecInfo.lpFile = _T("\\Storage Card\\message.exe");
ShExecInfo.lpParameters = _T("");
ShExecInfo.lpDirectory = NULL;
ShExecInfo.nShow = SW_SHOW;
ShExecInfo.hInstApp = NULL;
bRet = ShellExecuteEx(&ShExecInfo);
}

//if (bRet == true)
{
Sleep(4000);
m_Hwnd = ::FindWindow(NULL, _T("Message"));
Sleep(3000);
::BringWindowToTop(m_Hwnd);
Sleep(0);
::SendMessage(m_Hwnd, WM_COMMON_MESSAGE, (WPARAM)8888, (LPARAM)6666);
}

我想启动message.exe后，发消息给message.exe, 让它做另一件事情(或到另一个状态).

如果message.exe已经启动，发消息给message.exe，可以。

如果message.exe没有启动，ShellExecuteEx(&ShExecInfo)让它启动，再发消息给message.exe，则不可以。

为什么会这样?

VC 中有 try ....语句吗? 语句保证它必须执行下一行.

[一笑拔剑]

他执行了下一行

但是message还没有启动完成

他这么接受你的命令

用sleep等上500毫秒再发送命令看看吧

[fengrx]

ShellExecuteEx应该是异步执行的吧。
使用CreateProcess应该可以控制同步。