Winapi 调用windows函数(获取字体目录)
我尝试查找windows安装中的字体文件夹。AFAICS建议的方法是在Winapi 调用windows函数(获取字体目录),winapi,go,Winapi,Go,我尝试查找windows安装中的字体文件夹。AFAICS建议的方法是在Shell32.dll中调用SHGetKnownFolderPath,并将KNOWNFOLDERID设置为FOLDERID\u Fonts 我不知道如何传递到下面代码中的调用函数: package main import ( "syscall" ) func main() { // HRESULT SHGetKnownFolderPath( // _In_ REFKNOWNFOLDER
Shell32.dll
中调用SHGetKnownFolderPath
,并将KNOWNFOLDERID
设置为FOLDERID\u Fonts
我不知道如何传递到下面代码中的调用
函数:
package main
import (
"syscall"
)
func main() {
// HRESULT SHGetKnownFolderPath(
// _In_ REFKNOWNFOLDERID rfid,
// _In_ DWORD dwFlags,
// _In_opt_ HANDLE hToken,
// _Out_ PWSTR *ppszPath
// );
var (
shell32 = syscall.NewLazyDLL("Shell32.dll")
shGetKnowFolderPath = shell32.NewProc("SHGetKnownFolderPath")
// Doesn't work, of course:
folderId int
flags int
handle int
retval int
)
shGetKnowFolderPath.Call(uintptr(folderId), uintptr(flags), uintptr(handle), uintptr(retval))
}
有什么想法吗?(我想现在的解决办法是坚持使用%windir%\font
,但我想得到一个合适的解决方案)
参考资料:
字体目录的folderId是
{FD228CB7-AE11-4AE3-864C-16F3910AB8FE}
标志
可能是SHGFP\u类型\u默认值
handle
可能是NULL
retval
我想应该是一个bool
,但我不确定
所有答案都来自您以前的链接。例如
package main
import (
"fmt"
"syscall"
"unsafe"
)
type GUID struct {
Data1 uint32
Data2 uint16
Data3 uint16
Data4 [8]byte
}
var (
FOLDERID_Fonts = GUID{0xFD228CB7, 0xAE11, 0x4AE3, [8]byte{0x86, 0x4C, 0x16, 0xF3, 0x91, 0x0A, 0xB8, 0xFE}}
)
var (
modShell32 = syscall.NewLazyDLL("Shell32.dll")
modOle32 = syscall.NewLazyDLL("Ole32.dll")
procSHGetKnownFolderPath = modShell32.NewProc("SHGetKnownFolderPath")
procCoTaskMemFree = modOle32.NewProc("CoTaskMemFree")
)
func SHGetKnownFolderPath(rfid *GUID, dwFlags uint32, hToken syscall.Handle, pszPath *uintptr) (retval error) {
r0, _, _ := syscall.Syscall6(procSHGetKnownFolderPath.Addr(), 4, uintptr(unsafe.Pointer(rfid)), uintptr(dwFlags), uintptr(hToken), uintptr(unsafe.Pointer(pszPath)), 0, 0)
if r0 != 0 {
retval = syscall.Errno(r0)
}
return
}
func CoTaskMemFree(pv uintptr) {
syscall.Syscall(procCoTaskMemFree.Addr(), 1, uintptr(pv), 0, 0)
return
}
func FontFolder() (string, error) {
var path uintptr
err := SHGetKnownFolderPath(&FOLDERID_Fonts, 0, 0, &path)
if err != nil {
return "", err
}
defer CoTaskMemFree(path)
folder := syscall.UTF16ToString((*[1 << 16]uint16)(unsafe.Pointer(path))[:])
return folder, nil
}
func main() {
folder, err := FontFolder()
if err != nil {
fmt.Println(err)
return
}
fmt.Println("Font Folder:", folder)
}
以防有人需要golang格式文档的文件夹id: 将此替换为peterSO的代码示例:
FOLDERID_Documents = GUID{0xFDD39AD0, 0x238F, 0x46AF, [8]byte{0xAD, 0xB4, 0x6C, 0x85, 0x48, 0x03, 0x69, 0xC7}}
FOLDERID_PublicDocuments = GUID{0xED4824AF, 0xDCE4, 0x45A8, [8]byte{0x81, 0xE2, 0xFC, 0x79, 0x65, 0x08, 0x36, 0x34}}
看
golang.org/x/sys/windows
现在有一个用于SHGetKnownFolderPath
的包装器,因此这更容易:
主程序包
进口(
“fmt”
“golang.org/x/sys/windows”
)
func main(){
路径,错误:=windows.KnownFolderPath(windows.FOLDERID\u字体,0)
如果错误!=零{
fmt.Println(错误)
返回
}
fmt.Println(路径)
}
为什么要投否决票?如何改进该问题?返回值的类型为HRESULT
。可以使用宏succeed(hr)
或FAILED(hr)
@Tim-thank将其转换为布尔成功代码,这很有意义。太棒了,谢谢!仍在努力理解这一点。给我一天:)很好的回答。。。只添加代码对新开发人员没有帮助。。。如果您能添加流程的详细信息,那就太好了
FOLDERID_Documents = GUID{0xFDD39AD0, 0x238F, 0x46AF, [8]byte{0xAD, 0xB4, 0x6C, 0x85, 0x48, 0x03, 0x69, 0xC7}}
FOLDERID_PublicDocuments = GUID{0xED4824AF, 0xDCE4, 0x45A8, [8]byte{0x81, 0xE2, 0xFC, 0x79, 0x65, 0x08, 0x36, 0x34}}