Using command line help

[rohagymeg]

I want to copy a file. I would like it so i can give the argument in command line and that would be the file name of the copied one. But when i run it with the argument, nothing happens. Also, can i set "lpCmdLine" to have a default value when no value is assigned to it? Thanks for help!



#include <windows.h>
int WINAPI WinMain(HINSTANCE hInstance, HINSTANCE hPrevInstance, LPSTR lpCmdLine, int iCmdShow)
{
lpCmdLine = (LPSTR)GetCommandLine();
CopyFile(L"lol.txt", (LPCWSTR)lpCmdLine, FALSE);
return 0;
}

[olivthill2]

I am not sure if it is a good thing to call GetCommandLine(). This will override the content of lpCmdLine. This is a pity since lpCmdLine is already containing your command line. You can see what is in this variable, with

FILE *log_fp; log_fp = fopen(log_file, "wt"); fprintf(log_fp, lpCmdLine); fclose(log_fp);

[BobS0327]

To convert the command line to an argv style array of strings, call CommandLineToArgvW which is explained at GetCommandLine

[johanneshau]

You can use the global variables __argc and __argv (and probably __envp), which contain the cmdline arguments like in a standard C program