dllimport

I want to use gsdll32.dll from Metro Style App c#. I load dll as follow: [DllImport("gsdll32.dll", EntryPoint = "gsapi_delete_instance")] private static extern void gsapi_delete_instance(IntPtr instance); [DllImport("gsdll32.dll", EntryPoint = "gsapi_revision")] private static extern int gsapi_revision(ref GS_Revision pGSRevisionInfo, int intLen); [DllImport("gsdll32.dll", EntryPoint = "gsapi_set_stdio")] private static extern int gsapi_set_stdio(IntPtr lngGSInstance, StdioCallBack gsdll_stdin, StdioCallBack gsdll_stdout, StdioCallBack gsdll_stderr); But when I try to load dll not found

I have a dynamic library ( .dll ) written in C++ exporting a function I'd like to use in my C# applicaiton: int SendText(void* pControl, char* sText); How can I, given it takes a pointer to void? Nitin Sawant for void* you can just use IntPtr , strings will work with the MarshalAs attribute: [DllImport("MyDll.dll", CharSet = CharSet.Ansi)] public static extern int SendText(IntPtr pControl, [MarshalAs(UnmanagedType.LPStr)] string sText); 来源： https://stackoverflow.com/questions/10630419/how-to-call-from-a-c-sharp-applicaiton-a-c-function-taking-a-pointer-to-void

I'm using the [DllImport] attribute to import a native DLL into my application but the DLL it's loading isn't in the local bin folder. It's being loaded from elsewhere on the system, but I can't work out where. It works on my dev machine but not on a clean one. I've enabled Fusion logging and that only shows me managed assemblies. I've dumped the process using Sysinternals Process Explorer and that's telling me it's in C:\Windows\System32 but I can't see the file there in Windows Explorer. It might be worth noting that I'm running 64 bit Windows 7 but the DLL only supports x86 so I've had to

I have a third party "mystery dll" written with Delphi(unknown version), working example in delphi (past 2009), dire need to use said dll in my C# code, and almost no relevant knowledge on how to do it. Here is Delpi example in using this dll: type TD_Query = function(host: WideString; port : Word;pud,query : WideString):WideString; stdcall; procedure TForm11.Button6Click(Sender: TObject); var Handle : LongWord; D_Query : TD_Query; sss : WideString; begin Handle := LoadLibrary('kobrasdk.dll'); sss:=''; if Handle <> 0 then begin @D_Query := GetProcAddress(Handle, 'D_Query'); sss:=D_Query('host'

I have a DLL written in C in source code. This is the code for the General Polygon Clipper (in case you are interested). I'm using it in a C# project via the C# wrapper provided on the homepage. This comes with a precompiled DLL. Since switching to a 64bit Development machine with Visual Studio 2010 and Windows 7 64 bit, the application won't run anymore. This is the error I get: An attempt was made to load a program with an incorrect format. This is because of DLLImport ing the 32bit gpc.dll , as I have gathered from stuff found on the web. I assume this will all go away if I recompile the

Okay one more function that it's not yet working. I am basically calling some C++ functions from C# by using P/Invoke. The problematic function does query a show laser device for some device related information, such as minimal and maximal scan rates and maximal points per second. The problematic function is: int GetDeviceInfo(DWORD deviceIndex, DeviceInfo* pDeviceInfo); Here's the C++ header file that I was given. That's a link to the very brief C++ SDK description . I don't have the sources to rebuild the DLL file and I also don't have the *.pdb file (the manufacturer can not supply it):

Inside the static Stopwatch constructor we can see the following code, that basicly checks whether a high-resolution performance counter exists. static Stopwatch() { if (!SafeNativeMethods.QueryPerformanceFrequency(out Frequency)) { IsHighResolution = false; Frequency = 0x989680L; tickFrequency = 1.0; } else { IsHighResolution = true; tickFrequency = 10000000.0; tickFrequency /= (double) Frequency; } } On MSDN it says about QueryPerformanceFrequency : Retrieves the frequency of the high-resolution performance counter, if one exists It's pretty unclear, however, when exactly does it exist? I

I'm writing a little C# app that calls a few functions in a C++ API. I have the C++ code building into a DLL, and the C# code calls the API using DllImport. (I am using a .DEF file for the C++ DLL so I don't need extern "C".) So far the API has one function, which currently does absolutely nothing: bool Foo() { return false; } In C#, I have the following: public class FooAPI { [DllImport("Foo.dll")] public static extern bool Foo(); } ... bool b = FooAPI.Foo(); if (!b) { // Throw an exception } My problem is that, for some reason, b is always evaluating to TRUE . I have a breakpoint on if (!b)

I am looking for a tool to trace the dlls being loaded into a process on windows. The app i have is loading managed and unmanaged dlls, but not sure if the managed ones are loading the unmaanged ones. Process Explorer and File Explorer doesn't seem to help much. Any thoughts?? thanks!! Procmon is the best tool I know of, though its level of detail can be overwhelming. As of version 2.0, Dependency Walker can do dynamic application profiling . This allows you to see what modules a running application is loading, as opposed to just seeing what is in the static import tables. 来源： https:/