Getting user temporary folder path in Windows

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How I can get the user's temp folder path in C++? My program has to run on Windows Vista and XP and they have different temp paths. How I can get it without losing compatibility?

Where is the Temporary folder?, Returns the path of the current user's temporary folder. public: static System::​String ^ GetTempPath();. C# Copy. If you change your mind, you can revert the changes for the folder location using these steps: Open File Explorer. Navigate to the current user folders location. Right-click one of the folder you

The GetTempPath function retrieves the path of the directory designated for temporary files. This function supersedes the GetTempDrive function.

DWORD GetTempPath(

DWORD nBufferLength, // size, in characters, of the buffer 
LPTSTR lpBuffer // address of buffer for temp. path 
); 

Parameters

nBufferLength

Specifies the size, in characters, of the string buffer identified by lpBuffer.

lpBuffer

Points to a string buffer that receives the null-terminated string specifying the temporary file path.

Return Values

If the function succeeds, the return value is the length, in characters, of the string copied to lpBuffer, not including the terminating null character. If the return value is greater than nBufferLength, the return value is the size of the buffer required to hold the path. If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

The GetTempPath function gets the temporary file path as follows:

  1. The path specified by the TMP environment variable.
  2. The path specified by the TEMP environment variable, if TMP is not defined.
  3. The current directory, if both TMP and TEMP are not defined.

Path.GetTempPath Method (System.IO), Retrieves the path of the directory designated for temporary files. To get extended error information, call GetLastError. the existence of the path and adequate access rights to the path prior to any use for file I/O operations. The GetTempPath function gets the temporary file path as follows: The path specified by the TMP environment variable. The path specified by the TEMP environment variable, if TMP is not defined. The current directory, if both TMP and TEMP are not defined.

Since C++ 17 you can use a cross-platform function: std::filesystem::temp_directory_path()

https://en.cppreference.com/w/cpp/filesystem/temp_directory_path

GetTempPathA function (fileapi.h), Is there a reason you can't use the Win32 GetTempPath API? http://msdn.​microsoft.com/en-us/library/aa364992(VS.85).aspx. This API is  a. Log in to Windows, make sure that you have been logged to the temp profile b. Click on a start button, c. Type regedit, right click on the icon and select Run as administrator d. By expanding fields on the left side navigate to: Computer \HKEY_LOCAL_MACHINE\ SOFTWARE\ Microsoft\

#include <iostream>
#include <string>

int main(int argc, char* argv[]){

    std::cout << getenv("TEMP") << std::endl;

    return 0;
}

Getting user temporary folder path in Windows, Where is the folder location? Change location of the Temp folder. Temporary Files in Windows are those junk files whose use is only temporary and Ideally, the Temporary Files should get deleted once the program exits. The temporary file is created within the user's temporary folder, which is the path returned by the GetTempPath method. The GetTempFileName method will raise an IOException if it is used to create more than 65535 files without deleting previous temporary files. The GetTempFileName method will raise an IOException if no unique temporary file name is available. To resolve this error, delete all unneeded temporary files.

Use GetTempPath() to retrieve the path of the directory designated for temporary files.

wstring TempPath;
wchar_t wcharPath[MAX_PATH];
if (GetTempPathW(MAX_PATH, wcharPath))
   TempPath = wcharPath;

Windows Temporary Files, For Windows Vista, 7, 8, and 10 the temp location has moved again to within the AppData section of the User Profile, typically C:\Users\User Name \AppData\​Local\  e) The key with .bak is your correct old user profile. Currently, your Windows 7/8.1 computer logged in with fresh (temporary) profile with the same key. So, rename the new profile key (which is not having.bak) and remove .bak from correct profile key. f) That’s it. Log off and login (or restart) with your user name and password. You must get

Temporary folder, You can find (or even change) your TEMP folder location from the System Properties dialog box. Here's how to get there: Windows XP: Right-click My Computer and click Properties on the pop-up menu. Use the Run command. This not only  Follow these simple steps to delete your temporary Windows files: Windows 10: Select the Cortana search box just to the right of the Start button on the taskbar. Windows 8.1: Right-click or tap-and-hold the Start button and then choose Run. Windows 8.0: The easiest way to access Run is from the Apps screen.

Where's my TEMP folder?, Adding a user name of 8 letters pushes this over 50 characters. The location of the temporary file directory is controlled by the operating system, 

Changing the Windows TEMP Directory, If you discover there is no TEMP folder in the expected location or if you receive an error message indicating you do not have permission to complete any of these​ 

Comments
  • If you're only interested in windows solutions you should place that in your question title.
  • Please consider changing the accepted answer to f-roche's, stackoverflow.com/a/51702008/3543437
  • You should link to an MSDN documentation as opposed to copy and apsting the contents
  • I'd actually appreciate both the info AND the link. The problem with links is that they rot over time.
  • -1 for giving no indication that it's a quotation, for not citing the source of the quotation, and for pasting out-of-date information.
  • This will usually return C:\Windows\Temp for Win32 apps and the temporary storage location for Windows Store Apps for AppContainers, and is also what std's filesystem temp_directory_path() api will return. Personally, I'd rather use the std instead of mucking around directly with WinAPIs, but a mature <filesystem> wasn't around when this was answered initially.
  • std::filesystem::temp_directory_path().wstring() works like a charm!
  • Well... kind of. I was hoping it would return whatever TEMP was set to, but it does more behind the scenes (but for your own good). For example, I've got a UWP Unit Test app, and it returns this instead: L"C:\\Users\\user name\\AppData\\Local\\Packages\\$(GUID)\\AC\\Temp\\$(FileName)" Which is the more useful of the two possibilities, seeing as a UWP app wouldn't let you write directly to whatever is set to TEMP in your env-vars with something like fwrite, which I manually verified is in fact the case.
  • Won't that only work on Windows if it's in English or some set of Latin-character languages?
  • You should be able to just use GetTempPath instead of GetTempPathW or GetTempPathA. You're encouraged to not use WinAPIs with the A and W contexts directly, as it's supposed to detect if your project is ANSI or not and use the correct one based off of that. At the very least it will make your code more robust.
  • This does not provide an answer to the question. To critique or request clarification from an author, leave a comment below their post.