asked on

C++ Bat file to self-delete (update)

Hello!

How are you?

I'm trying to do a self-update function.

I already did my copy with other name.

I'm trying to use a bath file when i close my app to delete this one.

void Window::Win::SelfDelete(){

	std::string filename = "bat.bat";

	//my app
	char myApp[MAX_PATH];
	GetModuleFileName(0, myApp, MAX_PATH);
	//bat
	char dir[MAX_PATH];
	GetCurrentDirectory(MAX_PATH, dir);
	std::string finalDir = std::string(dir) + "\\bat.bat";

	std::string bat;
	bat += ":Repeat ";
	bat += "del " + std::string(myApp);
	bat += " if exist " + std::string(myApp) + " goto Repeat ";
	bat += " del " + finalDir;

	std::ofstream file(filename, std::ios::out);
	if (file.is_open()){
		file << bat;
		file.close();
	}

	ShellExecute(NULL, "open", finalDir.c_str(), NULL, NULL, SW_HIDE);
}

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I'm not understand i need to do. I'm not good with bath files.

I'm executing it here:

case WM_CLOSE:{
		Window::Win::Inst().SelfDelete();
		DestroyWindow(hWnd);		
		break;
	}

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I want to delete the actual program and self-delete the bath after.

Ty for you attention and help.

bye

Júlio

ASKER

I changed to this:

void Window::Win::SelfDelete(){

	std::string filename = "bat.bat";

	//my app
	char myApp[MAX_PATH];
	GetModuleFileName(0, myApp, MAX_PATH);
	//bat
	char dir[MAX_PATH];
	GetCurrentDirectory(MAX_PATH, dir);
	std::string finalDir = std::string(dir) + "\\bat.bat";

	std::ofstream file(filename, std::ios::out);
	if (file.is_open()){
		file << ":Repeat" << std::endl;
		file << "del " + std::string(myApp) << std::endl;
		file << "if exist " + std::string(myApp) + " goto Repeat " << std::endl;
		file << "del " + finalDir << std::endl;
		file.close();
	}

	ShellExecute(NULL, "open", finalDir.c_str(), NULL, NULL, SW_HIDE);
}

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The problem is that now the bat file not self-deleting.
i worked with bath files like 15 years ago, i'm reading everything again to try to do it.

the "del %0" is not working for me too.

Júlio

ASKER

Now it's working:

void Window::Win::SelfDelete(){

	std::string filename = "bat.bat";
	//my app
	char myApp[MAX_PATH];
	GetModuleFileName(0, myApp, MAX_PATH);
	std::string::size_type pos = std::string(myApp).find_last_of("\\");
	std::string myAppFileName = std::string(myApp).substr(pos+1, std::string(myApp).length());
	////bat
	char dir[MAX_PATH];
	GetCurrentDirectory(MAX_PATH, dir);
	std::string finalDir = std::string(dir) + "\\bat.bat";

	std::ofstream file(filename, std::ios::out);
	if (file.is_open()){
		file << ":Repeat" << std::endl;
		file << "del " + myAppFileName << std::endl;
		file << "if exist " + myAppFileName + " goto Repeat " << std::endl;
		file << "del ""%0"" ";
		file.close();
	}

	ShellExecute(NULL, "open", finalDir.c_str(), NULL, NULL, SW_HIDE);
}

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If someone have a better solution, please tell me.

ASKER CERTIFIED SOLUTION

jkr

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