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POC++ : Why am i getting Linker errors?
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copied!<p>Note that i am using Windows Forms Applications with the .NET </p> <p>Here is my code:</p> <pre><code>#pragma once #include <cstdlib> #include <Windows.h> #include <string.h> #include <stdlib.h> #include <algorithm> #include <stdio.h> #include <string> #include <cstring> #include <iostream> #include <vcclr.h> #include <hashlibpp.h> namespace Launcher { using namespace System; using namespace System::ComponentModel; using namespace System::Collections; using namespace System::Windows::Forms; using namespace System::Data; using namespace System::Drawing; using namespace System::Diagnostics; using namespace MySql::Data::MySqlClient; using namespace std; using namespace System::Runtime::InteropServices; /// <summary> /// Summary for Form1 /// </summary> public ref class Form1 : public System::Windows::Forms::Form { public: Form1(void) { InitializeComponent(); // //TODO: Add the constructor code here // } protected: /// <summary> /// Clean up any resources being used. /// </summary> ~Form1() { if (components) { delete components; } } //Component properties (not important) } #pragma endregion void convert(String^ total1, char *ch){ //Converts string to const char* // Pin memory so GC can't move it while native function is called pin_ptr<const wchar_t> c1 = PtrToStringChars(total1); printf_s("%S\n", c1); // Conversion to char* : // Can just convert wchar_t* to char* using one of the // conversion functions such as: // WideCharToMultiByte() // wcstombs_s() // ... etc size_t convertedChars = 0; size_t sizeInBytes = ((total1->Length + 1) * 2); errno_t err = 0; ch = (char *)malloc(sizeInBytes); err = wcstombs_s(&convertedChars, ch, sizeInBytes, c1, sizeInBytes); if (err != 0) printf_s("wcstombs_s failed!\n"); printf_s("%s\n", ch); } void MarshalString ( String ^ s, string& os ) { //Another converter using namespace Runtime::InteropServices; const char* chars = (const char*)(Marshal::StringToHGlobalAnsi(s)).ToPointer(); os = chars; Marshal::FreeHGlobal(IntPtr((void*)chars)); } void MarshalString ( String ^ s, wstring& os ) { //Another converter using namespace Runtime::InteropServices; const wchar_t* chars = (const wchar_t*)(Marshal::StringToHGlobalUni(s)).ToPointer(); os = chars; Marshal::FreeHGlobal(IntPtr((void*)chars)); } private: System::Void Form1_Load(System::Object^ sender, System::EventArgs^ e) { } //I removed some other functions from here because they are blank private: System::Void button1_Click(System::Object^ sender, System::EventArgs^ e) { //MySQL variables try{ conDataBase->Open(); myReader=cmdDataBase->ExecuteReader(); while(myReader->Read()){ String^ atmp_user = textBox1->Text; String^ user = (myReader->GetString(1));//Gets Usernames from database String^ atmp_pass = textBox2->Text; String^ pass = (myReader->GetString(2));//Gets Passwords from database atmp_pass->ToLower();//Lower Case's variable atmp_user->ToLower(); String^ total1 = gcnew String(atmp_user+atmp_pass);//Combines 2 strings string totala;//std::string MarshalString(total1, totala);//Copies data from (total1) to (totala) hashwrapper *myWrapper = new sha1wrapper();//SHA1 hashing begins string hash1 = myWrapper->getHashFromString(totala);//creates new variable(hash1) and copies data from (totala) String^ finalpass;//Creates new System::String MarshalString(finalpass, hash1);//Copies data from (hash1) to (finalpass) delete myWrapper;//Ends SHA1 hashing //Login Script if(atmp_user == user && finalpass == pass){ textBox1->Text = ("It worked!"); } } } catch(Exception^ex) { MessageBox::Show(ex->Message); } } //Other blank functions created }; } </code></pre> <p>Here are the errors:</p> <pre><code>Error 4 error LNK2028: unresolved token (0A0000D5) "public: __clrcall md5wrapper::md5wrapper(void)" (??0md5wrapper@@$$FQAM@XZ) referenced in function "public: class hashwrapper * __clrcall wrapperfactory::create(enum HL_Wrappertype)" (?create@wrapperfactory@@$$FQAMPAVhashwrapper@@W4HL_Wrappertype@@@Z) C:\Users\Jeremy\Documents\Visual Studio 2010\Projects\Launcher\Launcher\hl_wrapperfactory.obj Error 3 error LNK2028: unresolved token (0A00009D) "public: __clrcall sha384wrapper::sha384wrapper(void)" (??0sha384wrapper@@$$FQAM@XZ) referenced in function "public: class hashwrapper * __clrcall wrapperfactory::create(enum HL_Wrappertype)" (?create@wrapperfactory@@$$FQAMPAVhashwrapper@@W4HL_Wrappertype@@@Z) C:\Users\Jeremy\Documents\Visual Studio 2010\Projects\Launcher\Launcher\hl_wrapperfactory.obj Error 2 error LNK2028: unresolved token (0A000094) "public: __clrcall sha512wrapper::sha512wrapper(void)" (??0sha512wrapper@@$$FQAM@XZ) referenced in function "public: class hashwrapper * __clrcall wrapperfactory::create(enum HL_Wrappertype)" (?create@wrapperfactory@@$$FQAMPAVhashwrapper@@W4HL_Wrappertype@@@Z) C:\Users\Jeremy\Documents\Visual Studio 2010\Projects\Launcher\Launcher\hl_wrapperfactory.obj Error 1 error LNK2028: unresolved token (0A00005B) "public: __clrcall sha256wrapper::sha256wrapper(void)" (??0sha256wrapper@@$$FQAM@XZ) referenced in function "public: class hashwrapper * __clrcall wrapperfactory::create(enum HL_Wrappertype)" (?create@wrapperfactory@@$$FQAMPAVhashwrapper@@W4HL_Wrappertype@@@Z) C:\Users\Jeremy\Documents\Visual Studio 2010\Projects\Launcher\Launcher\hl_wrapperfactory.obj Error 5 error LNK2019: unresolved external symbol "public: __clrcall sha512wrapper::sha512wrapper(void)" (??0sha512wrapper@@$$FQAM@XZ) referenced in function "public: class hashwrapper * __clrcall wrapperfactory::create(enum HL_Wrappertype)" (?create@wrapperfactory@@$$FQAMPAVhashwrapper@@W4HL_Wrappertype@@@Z) C:\Users\Jeremy\Documents\Visual Studio 2010\Projects\Launcher\Launcher\hl_wrapperfactory.obj Error 6 error LNK2019: unresolved external symbol "public: __clrcall sha384wrapper::sha384wrapper(void)" (??0sha384wrapper@@$$FQAM@XZ) referenced in function "public: class hashwrapper * __clrcall wrapperfactory::create(enum HL_Wrappertype)" (?create@wrapperfactory@@$$FQAMPAVhashwrapper@@W4HL_Wrappertype@@@Z) C:\Users\Jeremy\Documents\Visual Studio 2010\Projects\Launcher\Launcher\hl_wrapperfactory.obj Error 7 error LNK2019: unresolved external symbol "public: __clrcall sha256wrapper::sha256wrapper(void)" (??0sha256wrapper@@$$FQAM@XZ) referenced in function "public: class hashwrapper * __clrcall wrapperfactory::create(enum HL_Wrappertype)" (?create@wrapperfactory@@$$FQAMPAVhashwrapper@@W4HL_Wrappertype@@@Z) C:\Users\Jeremy\Documents\Visual Studio 2010\Projects\Launcher\Launcher\hl_wrapperfactory.obj Error 8 error LNK2019: unresolved external symbol "public: __clrcall md5wrapper::md5wrapper(void)" (??0md5wrapper@@$$FQAM@XZ) referenced in function "public: class hashwrapper * __clrcall wrapperfactory::create(enum HL_Wrappertype)" (?create@wrapperfactory@@$$FQAMPAVhashwrapper@@W4HL_Wrappertype@@@Z) C:\Users\Jeremy\Documents\Visual Studio 2010\Projects\Launcher\Launcher\hl_wrapperfactory.obj Error 9 error LNK1120: 8 unresolved externals C:\Users\Jeremy\Documents\Visual Studio 2010\Projects\Launcher\Debug\Launcher.exe 1 </code></pre> <p>I don't understand these so i hope you guys can. Btw i am using the hashlib++ library in this project for the SHA1 hashing. I am assuming that's why there are so many references to it. </p>

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