Problem with CreateProcess

[rajeevktripathi]

Hi All I am having a problem in my application, what I am doing is: Calling a function SaveKeys(TCHAR *) within a loop and this function save the specified registry key to a .reg file, for this using CreateProcess( ) for calling regedit.exe from command line and WaitForSingleObject( ) function. code looks like this for (int i = 0; i < 10; i++) { // some code here SaveKeys(cRegistryKey ); // for specified Registry Key } void MyClass::SaveKeys(TCHAR *cRegistryKey) { STARTUPINFO StartupInfo; PROCESS_INFORMATION ProcessInformation; CreateProcess(NULL, cCommand,NULL,NULL,FALSE,CREATE_DEFAULT_ERROR_MODE|CREATE_SUSPENDED,NULL, NULL, &StartupInfo, &ProcessInformation); WaitForSingleObject( ProcessInformation.hProcess, INFINITE ); } //e.g. Here cCommand = regedit /e C:\File.reg HKEY_CURRENT_USER\MyKey Now what is my problem is that here WaitForSingleObject( ) function is not working. and only a single reg file is created. and when use Sleep(1000) then all the 10 reg file are created. So please tell me that how should I overcome this problem. Please reply Thanks

[Garth J Lancaster]

why bother shelling an external process when you can use something like http://www.codeproject.com/system/NtRegistry.asp[^] to do it directly from your program - if you look under http://www.codeproject.com/system[^] you'll find lots more goodies to help you 'g'

[Viorel]

Uninitialized STARTUPINFO structure is one of the problems of your code. It can be fixed like this:

STARTUPINFO StartupInfo = { sizeof(STARTUPINFO) };

[Viorel]

In addition, it seems that the invoked regedit tools cannot work in multi-instance mode. For example, I cannot start more then one regedit application from Windows menu or command line. That's why only some of your calls work. This probably means that you cannot do multi-threaded export using regedit tool.

[valikac]

CREATE_SUSPENDED ResumeThread() Kuphryn