关于WaitForSingleObject

//该函数的功能为一直在等待Notepad执行，直到Notepad关闭为止
function WinExecAndWait32(APath: PChar; ACmdShow: Integer;
ATimeout: Longword): Integer;
var
vStartupInfo: TStartupInfo;
vProcessInfo: TProcessInformation;
begin
FillChar(vStartupInfo, SizeOf(TStartupInfo), 0);
with vStartupInfo do
begin
cb := SizeOf(TStartupInfo);
dwFlags := STARTF_USESHOWWINDOW or STARTF_FORCEONFEEDBACK;
wShowWindow := ACmdShow;
end;
if CreateProcess(nil, APath, nil, nil, False,
NORMAL_PRIORITY_CLASS, nil, nil,
vStartupInfo, vProcessInfo) then
Result := WaitForSingleObject(vProcessInfo.hProcess, ATimeout)
else Result := GetLastError;
end;

procedure TForm1.Button1Click(Sender: TObject);
begin
WinExecAndWait32('notepad.exe', SW_SHOW, INFINITE);
end;