C / C++ / MFC

tom groezer wrote:

I'm waiting for this process to complete but that line is after DoModal after which the control is not going.

Mark Salsbery
Microsoft MVP - Visual C++

//--------------------------------------
// IDD_PROCESSWAITER dialog resource
//--------------------------------------

IDD_PROCESSWAITER DIALOGEX 0, 0, 193, 50
STYLE DS_SETFONT | DS_MODALFRAME | DS_FIXEDSYS | WS_POPUP | WS_CAPTION
CAPTION "Waiting..."
FONT 8, "MS Shell Dlg", 400, 0, 0x1
BEGIN
    CTEXT           "Waiting for process to complete...",IDC_STATIC,7,17,179,8
END



//--------------------------------------
// ProcessWaiter.h
//--------------------------------------

#pragma once

// CProcessWaiter dialog

class CProcessWaiter : public CDialog
{
	DECLARE_DYNAMIC(CProcessWaiter)

	CString ProcessPathname;

	static UINT __cdecl ProcessCreatorAndWaiterThread(LPVOID pParam);

public:
	CProcessWaiter(CWnd* pParent = NULL);   // standard constructor
	virtual ~CProcessWaiter();

	INT_PTR ExecuteProcessAndWait(LPCTSTR pathname);

// Dialog Data
	enum { IDD = IDD_PROCESSWAITER };

protected:
	virtual void DoDataExchange(CDataExchange* pDX);    // DDX/DDV support

	DECLARE_MESSAGE_MAP()

protected:
	virtual BOOL OnInitDialog();
	virtual void OnOK();
	virtual void OnCancel();
	afx_msg LRESULT OnThreadComplete(WPARAM wParam, LPARAM lParam);
};



//--------------------------------------
// ProcessWaiter.cpp
//--------------------------------------

// ProcessWaiter.cpp : implementation file
//

#include "stdafx.h"
#include "ProcessWaiter.h"


#define WMX_THREADCOMPLETE (WM_APP + 42)

// CProcessWaiter dialog

IMPLEMENT_DYNAMIC(CProcessWaiter, CDialog)

CProcessWaiter::CProcessWaiter(CWnd* pParent /*=NULL*/)
	: CDialog(CProcessWaiter::IDD, pParent)
{
}

CProcessWaiter::~CProcessWaiter()
{
}

INT_PTR CProcessWaiter::ExecuteProcessAndWait(LPCTSTR pathname)
{
	ProcessPathname = pathname;

	return DoModal();
}


UINT __cdecl CProcessWaiter::ProcessCreatorAndWaiterThread(LPVOID pParam)
{
	CProcessWaiter *pThis = (CProcessWaiter*) pParam;

	PROCESS_INFORMATION ProcessInfo;
	STARTUPINFO StartupInfo;
	memset(&StartupInfo, 0, sizeof(STARTUPINFO));
	StartupInfo.cb = sizeof(STARTUPINFO);  

	if (0 != ::CreateProcess(pThis->ProcessPathname,//  LPCTSTR lpApplicationName,
							NULL,					//  LPTSTR lpCommandLine,
							NULL,					//  LPSECURITY_ATTRIBUTES lpProcessAttributes,
							NULL,					//  LPSECURITY_ATTRIBUTES lpThreadAttributes,
							FALSE,					//  BOOL bInheritHandles,
							NORMAL_PRIORITY_CLASS,	//  DWORD dwCreationFlags,
							NULL,					//  LPVOID lpEnvironment,
							NULL,					//  LPCTSTR lpCurrentDirectory,
							&StartupInfo,			//  LPSTARTUPINFO lpStartupInfo,
							&ProcessInfo			//  LPPROCESS_INFORMATION lpProcessInformation
							))
	{
		::WaitForSingleObject(ProcessInfo.hProcess, INFINITE);

		::CloseHandle(ProcessInfo.hProcess);  
		::CloseHandle(ProcessInfo.hThread);  
	}

	pThis->PostMessage(WMX_THREADCOMPLETE);

	return 0;
}


void CProcessWaiter::DoDataExchange(CDataExchange* pDX)
{
	CDialog::DoDataExchange(pDX);
}


BEGIN_MESSAGE_MAP(CProcessWaiter, CDialog)
	ON_MESSAGE(WMX_THREADCOMPLETE, &CProcessWaiter::OnThreadComplete)
END_MESSAGE_MAP()


// CProcessWaiter message handlers

BOOL CProcessWaiter::OnInitDialog()
{
	CDialog::OnInitDialog();

	AfxBeginThread(&CProcessWaiter::ProcessCreatorAndWaiterThread, this);

	return TRUE;  // return TRUE unless you set the focus to a control
	// EXCEPTION: OCX Property Pages should return FALSE
}

void CProcessWaiter::OnOK()
{
	// Do nothing!
}

void CProcessWaiter::OnCancel()
{
	// Do nothing!
}

LRESULT CProcessWaiter::OnThreadComplete(WPARAM wParam, LPARAM lParam)
{
	EndDialog(0);

	return 0;
}



//--------------------------------------
// Example usage
//--------------------------------------

#include "stdafx.h"
#include "ProcessWaiter.h"
...
	CProcessWaiter ProcessWaiter(this);
	ProcessWaiter.ExecuteProcessAndWait(_T("C:\\Windows\\system32\\notepad.exe"));

Mark Salsbery
Microsoft MVP - Visual C++

tom groezer wrote:

// TODO: Place code here to handle when the dialog is
// dismissed with OK

Greetings.
--------
M.D.V.

If something has a solution... Why do we have to worry about?. If it has no solution... For what reason do we have to worry about?
Help me to understand what I'm saying, and I'll explain it better to you
“The First Rule of Program Optimization: Don't do it. The Second Rule of Program Optimization (for experts only!): Don't do it yet.” - Michael A. Jackson

Green Fuze wrote:

...with TPM.

Yanshof wrote:

I agree with you that this is "a bad manners"...