Encapsulate LoadLibrary with macro definition to facilitate dynamic loading of dll and loadlibrarydll

Encapsulate LoadLibrary with macro definition to facilitate dynamic loading of dll and loadlibrarydll

When I load dll dynamically, do you feel a lot of trouble? Every time: LoadLibrary,: GetProcAddress, and a bunch of typedef functions. I am bored recently. I encapsulated it with a macro, so I can write less code, which is quite convenient to use.

However, you can add up to five parameters. I think it will be nice to wait for the next time I use flexbison to write a generation tool.

1 # pragma once 2 /*! \ Brief Dynamic Load dll, and call the export function 3 author: 12178761@qq.com 4 */5 # define DLLLOADER_BEGIN (NAME) \ 6 class DLLLOADER _ # NAME \ 7 {\ 8 public: \ 9 static BOOL Init (LPCWSTR sDllPath) {\ 10 if (RefHModule () \ 11 {\ 12 return TRUE; \ 13} \ 14 RefHModule () = :: loadLibrary (sDllPath); \ 15 if (! RefHModule () \ 16 {\ 17 return FALSE; \ 18} \ 19 return TRUE; \ 20} \ 21 static void UnInit () {\ 22 if (RefHModule ()) \ 23 {\ 24 FreeLibrary (RefHModule (); \ 25 RefHModule () = NULL; \ 26} \ 27} \ 28 static HMODULE & RefHModule () {\ 29 static hmodule m = NULL; \ 30 return M; \ 31} 32 # define DLLLOADER_ENTRY_0 (FUNNAME, FUNDESC, FUNRET, FUNRETDEF) \ 33 typedef FUNRET (FUNDESC * _ # FUNNAME) (); \ 34 static _ # FUNNAME Ref # FUNNAME () {\ 35 _ # funname f = (_ # FUNNAME): GetProcAddress (RefHModule (), # FUNNAME); \ 36 return F; \ 37} \ 38 static funret funname () {\ 39 if (Ref # FUNNAME () \ 40 {\ 41 return Ref # FUNNAME ()(); \ 42} \ 43 return FUNRETDEF; \ 44} 45 # define DLLLOADER_ENTRY_VOID0 (FUNNAME, FUNDESC) \ 46 typedef void (FUNDESC * _ # FUNNAME )(); \ 47 static _ # FUNNAME Ref # FUNNAME () {\ 48 _ # funname f = (_ # FUNNAME): GetProcAddress (RefHModule (), # FUNNAME ); \ 49 return F; \ 50} \ 51 static void FUNNAME () {\ 52 if (Ref # FUNNAME () \ 53 {\ 54 Ref # FUNNAME () (); \ 55} \ 56} 57 # define DLLLOADER_ENTRY_1 (FUNNAME, FUNDESC, FUNRET, FUNRETDEF, PARAMTYPE1) \ 58 typedef FUNRET (FUNDESC * _ # FUNNAME) (PARAMTYPE1 ); \ 59 static _ # FUNNAME Ref # FUNNAME () {\ 60 _ # funname f = (_ # FUNNAME): GetProcAddress (RefHModule (), # FUNNAME ); \ 61 return F; \ 62} \ 63 static funret funname (PARAMTYPE1 PARAM1) {\ 64 if (Ref # FUNNAME ()) \ 65 {\ 66 return Ref # FUNNAME () (PARAM1); \ 67} \ 68 return FUNRETDEF; \ 69} 70 # define DLLLOADER_ENTRY_VOID1 (FUNNAME, FUNDESC, PARAMTYPE1) \ 71 typedef void (FUNDESC * _ # FUNNAME) (PARAMTYPE1); \ 72 static _ # FUNNAME Ref # FUNNAME () {\ 73 _ # funname f = (_ # FUNNAME): GetProcAddress (RefHModule (), # FUNNAME); \ 74 return F; \ 75} \ 76 static void FUNNAME (PARAMTYPE1 PARAM1) {\ 77 if (Ref # FUNNAME () \ 78 {\ 79 Ref # FUNNAME () (PARAM1 ); \ 80} \ 81} 82 # define DLLLOADER_ENTRY_2 (FUNNAME, FUNDESC, FUNRET, FUNRETDEF, PARAMTYPE1, PARAMTYPE2) \ 83 typedef FUNRET (FUNDESC * _ # FUNNAME) (PARAMTYPE1, PARAMTYPE2); \ 84 static _ ## FUNNAME Ref ## FUNNAME () {\ 85 _ # funname f = (_ # FUNNAME): GetProcAddress (RefHModule (), # FUNNAME); \ 86 return F; \ 87} \ 88 static funret funname (PARAMTYPE1 PARAM1, PARAMTYPE2 PARAM2) {\ 89 if (Ref # FUNNAME ()) \ 90 {\ 91 return Ref # FUNNAME () (PARAM1, PARAM2); \ 92} \ 93 return FUNRETDEF; \ 94} 95 # define DLLLOADER_ENTRY_VOID2 (FUNNAME, FUNDESC, PARAMTYPE1, PARAMTYPE2) \ 96 typedef void (FUNDESC * _ # FUNNAME) (PARAMTYPE1, PARAMTYPE2); \ 97 static _ # FUNNAME Ref # FUNNAME () {\ 98 _ # funname f = (_ # FUNNAME): GetProcAddress (RefHModule (), # FUNNAME); \ 99 return F; \ 100} \ 101 static void FUNNAME (PARAMTYPE1 PARAM1, PARAMTYPE2 PARAM2) {\ 102 if (Ref # FUNNAME () \ 103 {\ 104 Ref # FUNNAME () (PARAM1, PARAM2); \ 105} \ 106} 107 # define DLLLOADER_ENTRY_3 (FUNNAME, FUNDESC, FUNRET, FUNRETDEF, PARAMTYPE1, PARAMTYPE2, PARAMTYPE3) \ 108 typedef FUNRET (FUNDESC * _ # FUNNAME) (PARAMTYPE1, PARAMTYPE2, PARAMTYPE3); \ 109 static _ # FUNNAME Ref # FUNNAME () {\ 110 _ # funname f = (_ # FUNNAME): GetProcAddress (RefHModule (), # FUNNAME); \ 111 return F; \ 112} \ 113 static funret funname (PARAMTYPE1 PARAM1, PARAMTYPE2 PARAM2, PARAMTYPE3 PARAM3) {\ 114 if (Ref ## FUNNAME ()) \ 115 {\ 116 return Ref # FUNNAME () (PARAM1, PARAM2, PARAM3); \ 117} \ 118 return FUNRETDEF; \ 119} 120 # define DLLLOADER_ENTRY_VOID3 (FUNNAME, FUNDESC, PARAMTYPE1, PARAMTYPE2, PARAMTYPE3) \ 121 typedef void (FUNDESC * _ # FUNNAME) (PARAMTYPE1, PARAMTYPE2, PARAMTYPE3); \ 122 static _ # FUNNAME Ref # FUNNAME () {\ 123 _ # funname f = (_ # FUNNAME): GetProcAddress (RefHModule (), # FUNNAME); \ 124 return F; \ 125} \ 126 static void FUNNAME (PARAMTYPE1 PARAM1, PARAMTYPE2 PARAM2, PARAMTYPE3 PARAM3) {\ 127 if (Ref ## FUNNAME ()) \ 128 {\ 129 Ref # FUNNAME () (PARAM1, PARAM2, PARAM3); \ 130} \ 131} 132 # define DLLLOADER_ENTRY_4 (FUNNAME, FUNDESC, FUNRET, FUNRETDEF, PARAMTYPE1, \ 133 PARAMTYPE2, PARAMTYPE3, PARAMTYPE4) \ 134 typedef FUNRET (FUNDESC * _ # FUNNAME) (PARAMTYPE1, PARAMTYPE2, PARAMTYPE3, PARAMTYPE4 ); \ 135 static _ # FUNNAME Ref # FUNNAME () {\ 136 _ # funname f = (_ # FUNNAME): GetProcAddress (RefHModule (), # FUNNAME ); \ 137 return F; \ 138} \ 139 static funret funname (PARAMTYPE1 PARAM1, PARAMTYPE2 PARAM2, PARAMTYPE3 PARAM3, PARAMTYPE4 PARAM4) {\ 140 if (Ref ## FUNNAME ()) \ 141 {\ 142 return Ref # FUNNAME () (PARAM1, PARAM2, PARAM3, PARAM4); \ 143} \ 144 return FUNRETDEF; \ 145} 146 # define DLLLOADER_ENTRY_VOID4 (FUNNAME, FUNDESC, PARAMTYPE1, \ 147 PARAMTYPE2, PARAMTYPE3, PARAMTYPE4) \ 148 typedef void (FUNDESC * _ # FUNNAME) (PARAMTYPE1, PARAMTYPE2, PARAMTYPE3, PARAMTYPE4 ); \ 149 static _ # FUNNAME Ref # FUNNAME () {\ 150 _ # funname f = (_ # FUNNAME): GetProcAddress (RefHModule (), # FUNNAME ); \ 151 return F; \ 152} \ 153 static void FUNNAME (PARAMTYPE1 PARAM1, PARAMTYPE2 PARAM2, PARAMTYPE3 PARAM3, PARAMTYPE4 PARAM4) {\ 154 if (Ref ## FUNNAME ()) \ 155 {\ 156 Ref # FUNNAME () (PARAM1, PARAM2, PARAM3, PARAM4); \ 157} \ 158} 159 # define DLLLOADER_ENTRY_5 (FUNNAME, FUNDESC, FUNRET, FUNRETDEF, PARAMTYPE1, \ 160 PARAMTYPE2, PARAMTYPE3, PARAMTYPE4, PARAMTYPE5) \ 161 typedef FUNRET (FUNDESC * _ # FUNNAME) (PARAMTYPE1, \ 162 PARAMTYPE2, PARAMTYPE3, PARAMTYPE4, PARAMTYPE5 ); \ 163 static _ # FUNNAME Ref # FUNNAME () {\ 164 _ # funname f = (_ # FUNNAME): GetProcAddress (RefHModule (), # FUNNAME ); \ 165 return F; \ 166} \ 167 static funret funname (PARAMTYPE1 PARAM1, PARAMTYPE2 PARAM2, \ 168 PARAMTYPE3 PARAM3, PARAMTYPE4 PARAM4, PARAMTYPE5 PARAM5) {\ 169 if (Ref # FUNNAME () \ 170 {\ 171 return Ref # FUNNAME () (PARAM1, PARAM2, PARAM3, PARAM4, PARAM5 ); \ 172} \ 173 return FUNRETDEF; \ 174} 175 # define DLLLOADER_ENTRY_VOID5 (FUNNAME, FUNDESC, PARAMTYPE1, \ 176 PARAMTYPE2, PARAMTYPE3, PARAMTYPE4, PARAMTYPE5) \ 177 typedef void (FUNDESC * _ # FUNNAME) (PARAMTYPE1, \ 178 PARAMTYPE2, PARAMTYPE3, PARAMTYPE4, PARAMTYPE5); \ 179 static _ ## FUNNAME Ref # FUNNAME () {\ 180 _ # funname f = (_ # FUNNAME): GetProcAddress (RefHModule (), # FUNNAME); \ 181 return F; \ 182} \ 183 static void FUNNAME (PARAMTYPE1 PARAM1, PARAMTYPE2 PARAM2, \ 184 PARAMTYPE3 PARAM3, PARAMTYPE4 PARAM4, PARAMTYPE5 PARAM5) {\ 185 if (Ref # FUNNAME ()) \ 186 {\ 187 Ref # FUNNAME () (PARAM1, PARAM2, PARAM3, PARAM4, PARAM5); \ 188} \ 189} 190 # define DLLLOADER_END () \ 191 }; 192 193/* 194 example: 195 DLLLOADER_BEGIN (SAMPLE) 196 functions (Function1, BOOL, FALSE,) 197 functions (Function2,) 198 DLLLOADER_ENTRY_1 (Function3, BOOL, FALSE, and LPCWSTR) 199 DLLLOADER_END () 200 201 kernel (KERNEL32) 202 kernel (LoadLibraryW, WINAPI, HMODULE, 0, LPCWSTR) 203 kernel (GetModuleFileNameW, WINAPI, DWORD, 0, HMODULE, lpwenamew, DWORD) 204 DLLLOADER_END () 205 206 int _ tmain (int argc, _ TCHAR * argv []) 207 {208 DLLLOADER_SAMPLE: Init (L "C: \ Users \ sosopop \ Documents \ Visual Studio 2005 \ Projects \ testHandle \ debug \ testLoadDll. dll "); 209 DLLLOADER_SAMPLE: Function1 (); 210 DLLLOADER_SAMPLE: Function2 (); 211 DLLLOADER_SAMPLE: Function3 (L" Function3 Hello "); 212 DLLLOADER_SAMPLE :: function4 (L "Function4", L "Hello"); 213 DLLLOADER_SAMPLE: UnInit (); 214 215 DLLLOADER_KERNEL32: Init (L "c: \ windows \ system32 \ kernel32.dll "); 216 HMODULE h = DLLLOADER_KERNEL32: LoadLibraryW (L" user32.dll "); 217 WCHAR sFileName [MAX_PATH] = {0 }; 218 DWORD nSize = DLLLOADER_KERNEL32: GetModuleFileNameW (NULL, sFileName, _ countof (sFileName); 219 220 return 0; 221} 222 */