我正在尝试使用ShellExecuteEx在同一命令行中运行多个任务。我在cmd.exe中运行它没有问题，如下所示：
C:\Program Files (x86)\AppFolder>App.exe MyTask1&&App.exe MyTask2
Running task: Task1
Table: Task1 100
Complete
Running task: Task2
Table: Task2 100
Complete
C:\Program Files (x86)\AppFolder>
现在，这是我在Delphi中运行的ShellExecuteEx版本，没有任何问题地运行一个任务：
procedure TfrmGTX.btnQBSyncClick(Sender: TObject);
var
FileName, Parameters, Folder, Directory: string;
sei: TShellExecuteInfo;
Error: DWORD;
OK: boolean;
begin
Folder := 'C:\Program Files (x86)\AppFolder\';
FileName := Folder + 'App.exe';
Parameters := 'MyTask1';
ZeroMemory(@sei, SizeOf(sei));
sei.cbSize := SizeOf(sei);
sei.lpFile := PChar(FileName);
sei.lpParameters := PChar(Parameters);
sei.lpDirectory := PChar(Folder);
sei.nShow := SW_SHOWNORMAL;
OK := ShellExecuteEx(@sei);
if not OK then
begin
Error := GetLastError;
ShowMessage('Error: ' + IntToStr(Error));
end;
end;
我要实现的目标是使用ShellExecuteEx一个接一个地运行2个任务。它们之间没有前提条件/关系。它具有相同的功能，但是将数据提供给数据库中的不同表。
我的问题是：
是否可以在参数的1个ShellExecuteEx命令中运行这2个任务？如果是这样，在参数内执行此操作的最佳方法是什么？
还是我应该创建一个for循环来依次运行这两个任务？
还是有什么建议？
我喜欢第一个，因为它更干净并且在ShellExecuteEx的功能范围内。
我看到一些作品说我应该分别运行它们或创建一些脚本。
这是@ Alex_89共享的ExecuteDOSOutput的结果。因此，到目前为止，它可以在一个触发器中运行多个任务，并且能够在MyApp TMemo中捕获结果。只是结果与我期望的不同：
Running task: Task1
Table: A_SALES 0% ◘◘◘0% ◘◘◘0% ◘◘◘0% ◘◘◘0% ◘◘◘1% ◘◘◘1% ◘◘◘1% ◘◘◘1% ◘◘◘1% ◘◘◘1% ◘◘◘1% ◘◘◘1% ◘◘◘1% ◘◘◘2% ◘◘◘2% ◘◘◘2% ◘◘◘2% ◘◘◘2% ◘◘◘2% ◘◘◘2% ◘◘◘2% ◘◘◘2% ◘◘◘3% ◘◘◘3% ◘◘◘3% ◘◘◘3% ◘◘◘3% ◘◘◘3% ◘◘◘3% ◘◘◘3% ◘◘◘3% ◘◘◘4% ◘◘◘4% ◘◘◘4% ◘◘◘4% ◘◘◘4% ◘◘◘4% ◘◘◘4% ◘◘◘4% ◘◘◘4% ◘◘◘5% ◘◘◘5% ◘◘◘5% ◘◘◘5% ◘◘◘5% ◘◘◘5% ◘◘◘5% ◘◘◘5% ◘◘◘5% ◘◘◘6% ◘◘◘6% ◘◘◘6% ◘◘◘6% ◘◘◘6% ◘◘◘6% ◘◘◘6% ◘◘◘6% ◘◘◘7% ◘◘◘7% ◘◘◘7% ◘◘◘7% ◘◘◘7% ◘◘◘7% ◘◘◘7% ◘◘◘7% ◘◘◘7% ◘◘◘8% ◘◘◘8% ◘◘◘8% ◘◘◘8% ◘◘◘8% ◘◘◘8% ◘◘◘8% ◘◘◘8% ◘◘◘8% ◘◘◘9% ◘◘◘9% ◘◘◘9% ◘◘◘9% ◘◘◘9% ◘◘◘9% ◘◘◘9% ◘◘◘9% ◘◘◘9% 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Complete
Running task: Task2
Table: A_OUTPUTVAT 0% ◘◘◘0% ◘◘◘0% ◘◘◘0% ◘◘◘0% ◘◘◘1% ◘◘◘1% ◘◘◘1% ◘◘◘1% ◘◘◘1% ◘◘◘1% ◘◘◘1% ◘◘◘1% ◘◘◘1% ◘◘◘2% ◘◘◘2% ◘◘◘2% ◘◘◘2% ◘◘◘2% ◘◘◘2% ◘◘◘2% ◘◘◘2% ◘◘◘2% ◘◘◘3% ◘◘◘3% ◘◘◘3% ◘◘◘3% ◘◘◘3% ◘◘◘3% ◘◘◘3% ◘◘◘3% ◘◘◘3% ◘◘◘4% ◘◘◘4% ◘◘◘4% ◘◘◘4% ◘◘◘4% ◘◘◘4% ◘◘◘4% ◘◘◘4% ◘◘◘5% ◘◘◘5% ◘◘◘5% ◘◘◘5% ◘◘◘5% ◘◘◘5% ◘◘◘5% ◘◘◘5% ◘◘◘5% ◘◘◘6% ◘◘◘6% ◘◘◘6% ◘◘◘6% ◘◘◘6% ◘◘◘6% ◘◘◘6% ◘◘◘6% ◘◘◘6% ◘◘◘7% ◘◘◘7% ◘◘◘7% ◘◘◘7% ◘◘◘7% ◘◘◘7% ◘◘◘7% ◘◘◘7% ◘◘◘7% ◘◘◘8% ◘◘◘8% ◘◘◘8% ◘◘◘8% ◘◘◘8% ◘◘◘8% ◘◘◘8% ◘◘◘8% ◘◘◘8% ◘◘◘9% ◘◘◘9% ◘◘◘9% ◘◘◘9% ◘◘◘9% ◘◘◘9% ◘◘◘9% ◘◘◘9% ◘◘◘9% 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Complete
Running task: Task3
Table: Customer
Complete
我希望获得诸如在CMD.exe中运行该命令时所得到的实时渐进％百分比。
Running task: Task1
Table: Task1 100 //progress % shown here
Complete
Running task: Task2
Table: Task2 100 //progress % shown here
Complete
Running task: Task3
Table: Task2 100 //progress % shown here
Complete
我的意图是从CMD.exe实时捕获进度％，并将其作为进度条之类嵌入到MyApp中，这样我就可以触发完成并允许用户继续。
我只是希望有人能帮助我从CMD.exe实时捕获进度吗？
最佳答案
几年前，当我试图获取DOS命令的输出时遇到了这个片段。也许它将帮助您解决当前的问题。您只需调用此过程，您传递的任何命令都将执行。
我已经测试了它通过多个命令（并带有＆），它运行完美。例如：
ExecuteDOSCommand('getmac & ipconfig & vol', Output);
这是执行DOS命令的另一种方法。我知道代码很长，有些难以理解，但是它也可能对您有所帮助。尝试一下。您不需要更改任何内容，只需使用自己的参数调用该过程即可。
这是代码段：
procedure TForm1.ExecuteDOSCommand(Command: String; Output: TStrings; TimeOut: Int64 = 0);
var
ProcessStartupInfo: STARTUPINFO;
SecurityAttributes: SECURITY_ATTRIBUTES;
SecurityDescriptor: SECURITY_DESCRIPTOR;
ProcessInformation: PROCESS_INFORMATION;
PipeReadHandle, PipeWriteHandle: THandle;
BytesRead, ExitCode: Cardinal;
Buffer, UnicodeOutput: array[0..4095] of Char;
NormalizedStr, FullOutputStr: String;
EndingWaitTime: TDateTime;
function IsWinNT: Boolean;
var
OSVerInfo: OSVERSIONINFO;
begin
OSVerInfo.dwOSVersionInfoSize := SizeOf(OSVerInfo);
GetVersionEx(OSVerInfo);
Result := OSVerInfo.dwPlatformId = VER_PLATFORM_WIN32_NT;
end;
begin
Output.Clear;
if IsWinNT then
begin
InitializeSecurityDescriptor(@SecurityDescriptor, SECURITY_DESCRIPTOR_REVISION);
SetSecurityDescriptorDacl(@SecurityDescriptor, True, nil, False);
SecurityAttributes.lpSecurityDescriptor := @SecurityDescriptor;
end
else
SecurityAttributes.lpSecurityDescriptor := nil;
SecurityAttributes.nLength := SizeOf(SECURITY_ATTRIBUTES);
SecurityAttributes.bInheritHandle := True;
if CreatePipe(PipeReadHandle, PipeWriteHandle, @SecurityAttributes, 0) then
try
GetStartupInfo(ProcessStartupInfo);
with ProcessStartupInfo do
begin
dwFlags := STARTF_USESTDHANDLES or STARTF_USESHOWWINDOW;
wShowWindow := SW_HIDE;
hStdInput := PipeReadHandle;
hStdOutput := PipeWriteHandle;
hStdError := PipeWriteHandle;
end;
Fillchar(Buffer, SizeOf(Buffer), #0);
GetEnvironmentVariable('ComSpec', @Buffer, SizeOf(Buffer));
StrCat(@Buffer, PChar(' /c ' + Command));
if CreateProcess(nil, @Buffer, nil, nil, True, CREATE_NEW_CONSOLE, nil, nil, ProcessStartupInfo, ProcessInformation) then
begin
CloseHandle(ProcessInformation.hThread);
EndingWaitTime := IncMilliSecond(Now, TimeOut);
repeat
PeekNamedPipe(PipeReadHandle, @Buffer, SizeOf(Buffer), @BytesRead, nil, nil);
if BytesRead > 0 then
begin
Fillchar(Buffer, SizeOf(Buffer), #0);
ReadFile(PipeReadHandle, Buffer, BytesRead, BytesRead, nil);
FillChar(UnicodeOutput, SizeOf(UnicodeOutput), #0);
OemToChar(@Buffer, UnicodeOutput);
NormalizedStr := StringReplace(UnicodeOutput, '♪', #13, [rfReplaceAll]);
NormalizedStr := StringReplace(NormalizedStr, '◙', #10, [rfReplaceAll]);
FullOutputStr := FullOutputStr + NormalizedStr;
end;
GetExitCodeProcess(ProcessInformation.hProcess, ExitCode);
until ((ExitCode <> STILL_ACTIVE) and (BytesRead = 0)) or ((TimeOut > 0) and (EndingWaitTime < Now));
CloseHandle(ProcessInformation.hProcess);
Output.Text := FullOutputStr;
end;
finally
CloseHandle(PipeReadHandle);
CloseHandle(PipeWriteHandle);
end;
end;
假设您在窗体上有一个名为Button1的按钮和一个名为Memo1的备忘录，则可以为Button1的OnClick事件编写此事件处理程序。这是有关如何使用此过程的实用示例代码：
procedure TForm1.Button1Click(Sender: TObject);
var
Output: TStrings;
begin
Output := TStringList.Create;
try
ExecuteDOSCommand('getmac & ipconfig & vol', Output);
Memo1.Lines := Output;
finally
Output.Free;
end;
end;
顺便说一下，这是当前示例的“ uses”子句：
uses
Winapi.Windows, Winapi.Messages, System.SysUtils, System.Variants, System.Classes, Vcl.Graphics,
Vcl.Controls, Vcl.Forms, Vcl.Dialogs, Vcl.StdCtrls, Vcl.ExtCtrls, Vcl.ComCtrls, DateUtils;
请注意，我是如何在“ uses”子句中包含DateUtils单元的。对于代码段中的特定函数调用（IncMilliSecond（Now，TimeOut）;），这是必需的。其余的“用途”取决于您的需求。
关于delphi - 在Delphi中使用ShellExecuteEx在同一命令行中运行多个任务，我们在Stack Overflow上找到一个类似的问题： https://stackoverflow.com/questions/48247875/