unit UnitHookType;

interface

uses windows, messages;

implementation

end.
//==================================================
unit UnitHookDll;

interface

uses Windows, SysUtils, Classes, math, messages, dialogs, UnitNt2000Hook,
UnitHookType;

const
    COLOR1=255;
    COLOR2=0;
    COLOR3=255;
    Trap=true; //True陷阱式，False表示改引入表式

procedure StartHook; stdcall; {开始取词}
procedure StopHook; stdcall; {停止取词}

implementation

var
    MouseHook: THandle;
    pShMem: PShareMem;
    hMappingFile: THandle;
    FirstProcess:boolean;{是否是第一个进程}
    Hook: array[fBeginPaint..fDrawTextW] of THookClass;{API HOOK类}
    i:integer;

{自定义的BeginPaint}
function NewBeginPaint(Wnd: HWND; var lpPaint: TPaintStruct): HDC; stdcall;
type
   TBeginPaint=function (Wnd: HWND; var lpPaint: TPaintStruct): HDC; stdcall;
begin
   Hook[fBeginPaint].Restore;
   result:=TBeginPaint(Hook[fBeginPaint].OldFunction)(Wnd,lpPaint);
   if Wnd=pshmem^.hHookWnd then{如果是当前鼠标的窗口句柄}
   begin
      pshmem^.DCMouse:=result;{记录它的返回值}
   end
   else pshmem^.DCMouse:=0;
   Hook[fBeginPaint].Change;
end;

{自定义的GetWindowDC}
function NewGetWindowDC(Wnd: HWND): HDC; stdcall;
type
   TGetWindowDC=function (Wnd: HWND): HDC; stdcall;
begin
   Hook[fGetWindowDC].Restore;
   result:=TGetWindowDC(Hook[fGetWindowDC].OldFunction)(Wnd);
   if Wnd=pshmem^.hHookWnd then{如果是当前鼠标的窗口句柄}
   begin
      pshmem^.DCMouse:=result;{记录它的返回值}
   end
   else pshmem^.DCMouse:=0;
   Hook[fGetWindowDC].Change;
end;

{自定义的GetDC}
function NewGetDC(Wnd: HWND): HDC; stdcall;
type
   TGetDC=function (Wnd: HWND): HDC; stdcall;
begin
   Hook[fGetDC].Restore;
   result:=TGetDC(Hook[fGetDC].OldFunction)(Wnd);
   if Wnd=pshmem^.hHookWnd then{如果是当前鼠标的窗口句柄}
   begin
      pshmem^.DCMouse:=result;{记录它的返回值}
   end
   else pshmem^.DCMouse:=0;
   Hook[fGetDC].Change;
end;

{自定义的CreateCompatibleDC}
function NewCreateCompatibleDC(DC: HDC): HDC; stdcall;
type
   TCreateCompatibleDC=function (DC: HDC): HDC; stdcall;
begin
   Hook[fCreateCompatibleDC].Restore;
   result:=TCreateCompatibleDC(Hook[fCreateCompatibleDC].OldFunction)(DC);
   if DC=pshmem^.DCMouse then{如果是当前鼠标的窗口HDC}
   begin
      pshmem^.DCCompatible:=result;{记录它的返回值}
   end
   else pshmem^.DCCompatible:=0;
   Hook[fCreateCompatibleDC].Change;
end;

function NewTextOutA(theDC: HDC; nXStart, nYStart: integer; str: pchar; count: integer):

bool;
stdcall;
type
TTextOutA=function (theDC: HDC; nXStart, nYStart: integer; str: pchar; count: integer):

bool;stdcall;
var
    dwBytes: DWORD;
    poOri, poDC, poText, poMouse: TPoint;
    Size: TSize;
    Rec:TRect;
    faint:boolean;
begin
    Hook[fTextOutA].Restore;{暂停截取API，恢复被截的函数}
    try
        if pShMem^.bCanSpyNow then{是否开始取词}
        begin
           GetDCOrgEx(theDC, poOri);{HDC的坐标}
           poDC.x := nXStart;{显示的相对坐标}
           poDC.y := nYStart;
           if(poOri.X=0)and(poOri.Y=0)then{如果HDC的坐标为(0,0)}
           begin
              if (theDC=pShmem^.DCCompatible)then
                 faint:=false{精确匹配，就是指定的内存HDC}
              else faint:=true;{模糊匹配，"可能"是内存HDC}
              {取鼠标当前处的窗口（等效于Delphi的控件）坐标}
              GetWindowRect(pShMem^.hHookWnd,Rec);
              poOri.X:=Rec.Left;{把窗口坐标作为HDC的坐标}
              poOri.Y:=Rec.Top;
           end
           else begin{如果是普通HDC}
              {局部逻辑坐标转化为设备相关坐标}
              LPToDP(theDC, poDC, 1);
              faint:=false;{精确匹配，是普通HDC}
           end;
           {计算显示文字的屏幕坐标}
           poText.x := poDC.x + poOri.x;
           poText.y := poDC.y + poOri.y;
           {获取当前鼠标的坐标}
           GetCursorPos(poMouse);
           {如果对齐属性是居中}
           if (GetTextAlign(theDC) and TA_UPDATECP) <> 0 then
           begin
               GetCurrentPositionEx(theDC, @poOri);
               poText.x := poText.x + poOri.x;
               poText.y := poText.y + poOri.y;
           end;
           {显示文字的长和宽}
           GetTextExtentPoint(theDC, Str, Count, Size);
           {鼠标是否在文本的范围内}
           if (poMouse.x >= poText.x) and (poMouse.x <= poText.x + Size.cx)
               and (poMouse.y >= poText.y) and (poMouse.y <= poText.y + Size.cy)
               then
           begin
               {最多取MaxStringLen个字节}
               dwBytes := min(Count, MaxStringLen);
               {拷贝字符串}
               CopyMemory(@(pShMem^.Text), Str, dwBytes);
               {以空字符结束}
               pShMem^.Text[dwBytes] := Chr(0);
               {发送WM_MOUSEPT成功取词的消息给主程序}
               postMessage(pShMem^.hProcWnd, WM_MOUSEPT, fTextOutA, 2);
               {如果输出的不是Tab键，而且是精确匹配的}
               if (string(pShMem^.Text)<>#3)and(not faint) then
                  pShMem^.bCanSpyNow := False;{取词结束}
           end;
        end;
    finally
        {调用被截的函数}
        result := TTextOutA(Hook[fTextOutA].OldFunction)(theDC, nXStart,
            nYStart, str, count);
    end;
    Hook[fTextOutA].Change;{重新截取API}
end;

function NewTextOutW(theDC: HDC; nXStart, nYStart: integer; str: pWidechar; count: integer):

bool; stdcall;
type
TTextOutW=function (theDC: HDC; nXStart, nYStart: integer; str: pWidechar; count:

integer): bool; stdcall;
var
    dwBytes: DWORD;
    poOri, poDC, poText, poMouse: TPoint;
    Size: TSize;
    Rec:TRect;
    faint:boolean;
begin
    Hook[fTextOutW].Restore;{暂停截取API，恢复被截的函数}
//    SetTextColor(thedc,RGB(COLOR1,COLOR2,COLOR3));
    try
        if pShMem^.bCanSpyNow then{是否开始取词}
        begin
           GetDCOrgEx(theDC, poOri);{HDC的坐标}
           poDC.x := nXStart;{显示的相对坐标}
           poDC.y := nYStart;
           if(poOri.X=0)and(poOri.Y=0)then{如果HDC的坐标为(0,0)}
           begin
              if (theDC=pShmem^.DCCompatible)then
                 faint:=false{精确匹配，就是指定的内存HDC}
              else faint:=true;{模糊匹配，"可能"是内存HDC}
              {取鼠标当前处的窗口（等效于Delphi的控件）坐标}
              GetWindowRect(pShMem^.hHookWnd,Rec);
              poOri.X:=Rec.Left;{把窗口坐标作为HDC的坐标}
              poOri.Y:=Rec.Top;
           end
           else begin{如果是普通HDC}
              {局部逻辑坐标转化为设备相关坐标}
              LPToDP(theDC, poDC, 1);
              faint:=false;{精确匹配，是普通HDC}
           end;
           {计算显示文字的屏幕坐标}
           poText.x := poDC.x + poOri.x;
           poText.y := poDC.y + poOri.y;
           {获取当前鼠标的坐标}
           GetCursorPos(poMouse);
           {如果对齐属性是居中}
           if (GetTextAlign(theDC) and TA_UPDATECP) <> 0 then
           begin
               GetCurrentPositionEx(theDC, @poOri);
               poText.x := poText.x + poOri.x;
               poText.y := poText.y + poOri.y;
           end;
           {显示文字的长和宽}
           GetTextExtentPointW(theDC, Str, Count, Size);
           {鼠标是否在文本的范围内}
           if (poMouse.x >= poText.x) and (poMouse.x <= poText.x + Size.cx)
               and (poMouse.y >= poText.y) and (poMouse.y <= poText.y + Size.cy)
               then
           begin
               {最多取MaxStringLen个字节}
               dwBytes := min(Count*2, MaxStringLen);
               {拷贝字符串}
               CopyMemory(@(pShMem^.Text), Pchar(WideCharToString(Str)), dwBytes);
               {以空字符结束}
               pShMem^.Text[dwBytes] := Chr(0);
               {发送WM_MOUSEPT成功取词的消息给主程序}
               postMessage(pShMem^.hProcWnd, WM_MOUSEPT, fTextOutW, 2);
               {如果输出的不是Tab键，而且是精确匹配的}
               if (string(pShMem^.Text)<>#3)and(not faint) then
                  pShMem^.bCanSpyNow := False;{取词结束}
           end;
        end;
    finally
        {调用被截的函数}
        result := TTextOutW(Hook[fTextOutW].OldFunction)(theDC, nXStart, nYStart, str,

Count);
end;
Hook[fTextOutW].Change;{重新截取API}
end;

toOptions, rect, Str,
            Count, Dx);
    end;
    Hook[fExtTextOutA].Change;{重新截取API}
end;

toOptions,Rect, Str, Count, Dx);
end;
Hook[fExtTextOutW].Change;{重新截取API}
end;

uFormat);
end;
Hook[fDrawTextA].Change;{重新截取API}
end;

function NewDrawTextW(theDC: HDC; lpString: PWideChar; nCount: Integer;
    var lpRect: TRect; uFormat: UINT): Integer; stdcall;
type
TDrawTextW=function (theDC: HDC; lpString: PWideChar; nCount: Integer;
    var lpRect: TRect; uFormat: UINT): Integer; stdcall;
var
    poMouse,poOri,poDC: TPoint;
    dwBytes: integer;
    RectSave,rec:TRect;
    faint:boolean;
begin
    Hook[fDrawTextW].Restore;{暂停截取API，恢复被截的函数}

posted on 2009-07-24 09:47 yxbsmx 阅读(635) 评论(0) 编辑收藏举报

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