英文:
go LoadDLL with dependencies not in System or System32
问题
我正在尝试在Windows上加载一个GO库：
citect, err := syscall.LoadDLL("C:\\Program Files (x86)\\AVEVA Plant SCADA\\Bin\\Bin (x64)CtApi.dll")
问题是该库还有其他依赖项在同一目录中。结果是出现错误"找不到指定的模块"。我相当确定这是因为其他DLL中存在未满足的依赖关系导致的。
是否有一种方法可以通过syscall强制指定DLL搜索路径？
更新
我认为我遇到的问题是因为我指定了LOAD_LIBRARY_SEARCH_USER_DIRS，但我尝试加载的库还需要标准搜索路径。我添加了LOAD_LIBRARY_SEARCH_DEFAULT_DIRS，现在它给我一个有意义的句柄。
func main() {fmt.Println("hello")dllPath := "C:\\Program Files (x86)\\AVEVA Plant SCADA\\Bin\\Bin (x64)"kernel, _ := windows.LoadDLL("kernel32.dll")defer kernel.Release()sdd, err := kernel.FindProc("SetDefaultDllDirectories")if err != nil {panic(err)}r1, _, err := sdd.Call(windows.LOAD_LIBRARY_SEARCH_SYSTEM32)if r1 == 0 {panic(err)}addd, err := kernel.FindProc("AddDllDirectory")if err != nil {panic(err)}chars := StringToWideCharPtr(dllPath)r1, _, err = addd.Call(uintptr(unsafe.Pointer(chars)))fmt.Printf("result of add dll directory: %d\n", r1)if r1 == 0 {panic(err)}h, err := windows.LoadLibraryEx("CtApi.dll", 0, 0)if err != nil {panic(err)}fmt.Printf("library: %v\n", h)}
英文:
I am trying to load a library from GO on windows as:
citect, err := syscall.LoadDLL("C:\\Program Files (x86)\\AVEVA Plant SCADA\\Bin\\Bin (x64)CtApi.dll")
The problem is that this library has dependencies also in that directory. The result is an error "The specified module could not be found." I am pretty sure it's failing because of unmet dependencies in other DLLs.
Is there some way from syscall to force the DLL search path?
UPDATE
I think the issue I was having was because I was specifying LOAD_LIBRARY_SEARCH_USER_DIRS but the library I am trying to load needs the standard search path as well. I added LOAD_LIBRARY_SEARCH_DEFAULT_DIRS and now it gives me a Handle that makes sense.
func main() {fmt.Println("hello")dllPath := "C:\\Program Files (x86)\\AVEVA Plant SCADA\\Bin\\Bin (x64)"kernel, _ := windows.LoadDLL("kernel32.dll")defer kernel.Release()sdd, err := kernel.FindProc("SetDefaultDllDirectories")if err != nil {panic(err)}r1, _, err := sdd.Call(windows.LOAD_LIBRARY_SEARCH_SYSTEM32)if r1 == 0 {panic(err)}addd, err := kernel.FindProc("AddDllDirectory")if err != nil {panic(err)}chars := StringToWideCharPtr(dllPath)r1, _, err = addd.Call(uintptr(unsafe.Pointer(chars)))fmt.Printf("result of add dll directory: %d\n", r1)if r1 == 0 {panic(err)}h, err := windows.LoadLibraryEx("CtApi.dll", 0, 0)if err != nil {panic(err)}fmt.Printf("library: %v\n", h)}
答案1
得分: 2
尝试使用golang.org/x/sys/windows包中的LoadLibraryEx函数，该函数支持LOAD_LIBRARY_SEARCH_*标志（参见使用LOAD_LIBRARY_SEARCH标志的搜索顺序）。
package mainimport ("golang.org/x/sys/windows")func main() {name := "C:\\Program Files (x86)\\AVEVA Plant SCADA\\Bin\\Bin (x64)CtApi.dll"h, err := windows.LoadLibraryEx(name, 0, windows.LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR)if err != nil {panic(err)}dll := &windows.DLL{Name: name,Handle: h,}// 使用dll}
请注意，LOAD_LIBRARY_SEARCH_*标志在所有Windows版本上都不可用。请参见此处的代码注释。
英文:
Try to use LoadLibraryEx in the golang.org/x/sys/windows package, which supports the LOAD_LIBRARY_SEARCH_* flags (see Search order using LOAD_LIBRARY_SEARCH flags).
package mainimport ("golang.org/x/sys/windows")func main() {name := "C:\\Program Files (x86)\\AVEVA Plant SCADA\\Bin\\Bin (x64)CtApi.dll"h, err := windows.LoadLibraryEx(name, 0, windows.LOAD_LIBRARY_SEARCH_DLL_LOAD_DIR)if err != nil {panic(err)}dll := &windows.DLL{Name: name,Handle: h,}// use the dll}
Please note that the LOAD_LIBRARY_SEARCH_* flags are not available on all windows versions. See code comments here.
通过集体智慧和协作来改善编程学习和解决问题的方式。致力于成为全球开发者共同参与的知识库，让每个人都能够通过互相帮助和分享经验来进步。
评论