Windows API 获得用户目录

今天写一个程序,需要获得C:\Documents and Settings\<UserName>\Application Data这个目录的文件名. 百度了一下,发现了SHGetFolderPath的函数,示例代码:

#include <iostream>
#include <shlobj.h>

using namespace std;

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

if(SUCCEEDED(SHGetFolderPath(NULL, CSIDL_APPDATA, NULL, 0, szPath)))
{
cout << szPath << endl;
}
return 0;
}

注意代码应链结shell32库,命令行的话用/linkshell32.lib

又查了下MSDN,原型为

HRESULT SHGetFolderPath( HWND hwndOwner,
int nFolder,
HANDLE hToken,
DWORD dwFlags,
LPTSTR pszPath
);

其中hToken可取以下值:

CSIDL_ADMINTOOLS
CSIDL_COMMON_ADMINTOOLS
CSIDL_APPDATA
CSIDL_COMMON_APPDATA
CSIDL_COMMON_DOCUMENTS
CSIDL_COOKIES
CSIDL_FLAG_CREATE
CSIDL_HISTORY
CSIDL_INTERNET_CACHE
CSIDL_LOCAL_APPDATA
CSIDL_MYPICTURES
CSIDL_PERSONAL
CSIDL_PROGRAM_FILES
CSIDL_PROGRAM_FILES_COMMON
CSIDL_SYSTEM
CSIDL_WINDOWS

Comments

Exploring Immutable Distros and Declarative Management

My current server setup, based on Debian Stable and Docker, has served me reliably for years. It's stable, familiar, and gets the job done. However, an intriguing article I revisited recently about Fedora CoreOS, rpm-ostree, and OSTree native containers sparked my curiosity and sent me down a rabbit hole exploring alternative approaches to system management. Could there be a better way? Core Goals & Requirements Before diving into new technologies, I wanted to define what "better" means for my use case: The base operating system must update automatically and reliably. Hosted services (applications) should be updatable either automatically or manually, depending on the service. Configuration and data files need to be easy to modify, and crucially, automatically tracked and backed up. Current Setup: Debian Stable + Docker My current infrastructure consists of several servers, all running Debian Stable. System Updates are andled automatically via unattended-upgrades. Se...

A Rocky Migration: Moving from docker-compose to Podman and gVisor

I've been running a few containers for several years. They were all running under rootless Docker with a single user. Initially, I planned to migrate the containers to VMs , but I couldn't get a stable workflow after about two months of effort. Later, gVisor caught my attention , and I decided to migrate to Podman with gVisor instead. The new plan is to run each container with --userns=auto and use Quadlet for systemd integration. This approach provides better isolation and makes writing firewall rules easier. I'm now close to migrating all my containers. Here are a couple of rough edges I'd like to share. Network Layout I compared various networking options and spent a few hours trying the one-interface-per-group approach before giving up. I settled on a single macvlan network and decided to use static IP addresses for my containers. To prevent a randomly assigned IP address from conflicting with a predefined one, I allocated a large IP range for my ...

Determine Perspective Lines With Off-page Vanishing Point

In perspective drawing, a vanishing point represents a group of parallel lines, in other words, a direction. For any point on the paper, if we want a line towards the same direction (in the 3d space), we simply draw a line through it and the vanishing point. But sometimes the vanishing point is too far away, such that it is outside the paper/canvas. In this example, we have a point P and two perspective lines L1 and L2. The vanishing point VP is naturally the intersection of L1 and L2. The task is to draw a line through P and VP, without having VP on the paper. I am aware of a few traditional solutions: 1. Use extra pieces of paper such that we can extend L1 and L2 until we see VP. 2. Draw everything in a smaller scale, such that we can see both P and VP on the paper. Draw the line and scale everything back. 3. Draw a perspective grid using the Brewer Method. #1 and #2 might be quite practical. #3 may not guarantee a solution, unless we can measure distances/p...

WangLu's Notes

Search This Blog