How I save window state in file and restore from this save file

Take a look at Save and restore your form size and location[^] by the great @OriginalGriff. It is for .NET but should give you a reasonable idea of the process you need to follow.

You must save the needed values in a file or registry and restore it on launch. It is firstly the windows size and position and I guess its data which is displayed.

Maybe my article about Repositioning of Windows shows you some insights.

Quote:

i want to save window state in file like VMware and resume window

If you meant 'I want to save Windows (the operating system) state' then I fear it would be a very (very) difficult task. Probably you'd better find a tool for the purpose.

If you have MFC app this snippet saves window position:

int CMainFrame::OnCreate(LPCREATESTRUCT lpCreateStruct)
{
	if (CMDIFrameWnd::OnCreate(lpCreateStruct) == -1)
		return -1;
    //.....
        LoadPlacement();
	return 0;
}

void CMainFrame::OnClose() 
{
	SavePlacement();	
	CMDIFrameWnd::OnClose();
}

void CMainFrame::LoadPlacement()
{
	LPBYTE pbtData = 0;
	UINT nSize = 0;
	WINDOWPLACEMENT wp;
	if(!AfxGetApp()->GetProfileBinary(_T("MainWindow"), _T("Position"), &pbtData, &nSize))
		return;
	
	memcpy(&wp, pbtData, sizeof(WINDOWPLACEMENT));
	
	if(wp.flags & WPF_RESTORETOMAXIMIZED)
		wp.showCmd = SW_SHOWMAXIMIZED;
	else
		wp.showCmd = AfxGetApp ()->m_nCmdShow;
	
	SetWindowPlacement(&wp);
	
    delete [] pbtData;
}

void CMainFrame::SavePlacement()
{
	WINDOWPLACEMENT wp;
	if(!GetWindowPlacement(&wp))
		return;
	
	AfxGetApp()->WriteProfileBinary(_T("MainWindow"), _T("Position"), 
		reinterpret_cast<LPBYTE>((LPWINDOWPLACEMENT)&wp), 
         sizeof(WINDOWPLACEMENT));
}