p; maxExtent: Integer; Fit: PInteger; Dx: PInteger; Size: Pointer): BOOL; stdcall;
TGetTextExtentPoint32A = function(hdc: HDC; text: PAnsiChar; len: Integer; Size: Pointer): BOOL; stdcall;
TGetTextExtentPoint32W = function(hdc: HDC; text: PWideChar; len: Integer; Size: Pointer): BOOL; stdcall;
TGetTextExtentPointA = function(hdc: HDC; text: PAnsiChar; len: Integer; Size: Pointer): BOOL; stdcall;
TGetTextExtentPointW = function(hdc: HDC; text: PWideChar; len: Integer; Size: Pointer): BOOL; stdcall;
PPointer = ^Pointer;
TImportCode = packed record
JumpInstruction: Word; // should be $25FF
AddressOfPointerToFunction: PPointer;
end;
PImportCode = ^TImportCode;
procedure HookTextOut(ConvertFunction: TConvertTextFunction);
procedure UnhookTextOut;
implementation
Var
ConvertTextFunction: TConvertTextFunction = nil;
OldTextOutA: TTextOutA = nil;
OldTextOutW: TTextOutW = nil;
OldExtTextOutA: TExtTextOutA = nil;
OldExtTextOutW: TExtTextOutW = nil;
OldDrawTextA: TDrawTextA = nil;
OldDrawTextW: TDrawTextW = nil;
OldDrawTextExA: TDrawTextExA = nil;
OldDrawTextExW: TDrawTextExW = nil;
OldTabbedTextOutA: TTabbedTextOutA = nil;
OldTabbedTextOutW: TTabbedTextOutW = nil;
OldPolyTextOutA: TPolyTextOutA = nil;
OldPolyTextOutW: TPolyTextOutW = nil;
OldGetTextExtentExPointA: TGetTextExtentExPointA = nil;
OldGetTextExtentExPointW: TGetTextExtentExPointW = nil;
OldGetTextExtentPoint32A: TGetTextExtentPoint32A = nil;
OldGetTextExtentPoint32W: TGetTextExtentPoint32W = nil;
OldGetTextExtentPointA: TGetTextExtentPointA = nil;
OldGetTextExtentPointW: TGetTextExtentPointW = nil;
function StrLenW(s: PWideChar): Integer;
Var i: Integer;
begin
if s=nil then begin
Result:=0; exit;
end;
i:=0;
try
while (s[i]<>#0) do inc(i);
except
end;
Result:=i;
end;
function NewTextOutA(hdc: HDC; x,y: Integer; text: PAnsiChar; len: Integer): BOOL; stdcall;
Var s: String;
begin
try
if Len<0 then Len:=strlen(text);
If Len>0 then begin
SetLength(s,len);
FillChar(s[1],len+1,0);
Move(text^,s[1],len);
if @ConvertTextFunction<>nil then
s:=ConvertTextFunction(s);
if @OldTextOutA<>nil then
Result:=OldTextOutA(hdc,x,y,PAnsiChar(s),length(s))
else
Result:=False;
end else Result:=OldTextOutA(hdc,x,y,PAnsiChar(s),0);
except
Result:=False;
end;
end;
function NewTextOutW(hdc: HDC; x,y: Integer; text: PWideChar; len: Integer): BOOL; stdcall;
Var s: WideString;
begin
try
if Len<0 then Len:=strlenW(text);
If Len>0 then begin
SetLength(s,len);
FillChar(s[1],len*2+2,0);
Move(text^,s[1],len*2);
if @ConvertTextFunction<>nil then
s:=ConvertTextFunction(s);
if @OldTextOutW<>nil then
Result:=OldTextOutW(hdc,x,y,PWideChar(s),length(s))
else
Result:=False;
end else Result:=OldTextOutW(hdc,x,y,PWideChar(s),0);
except
Result:=False;
end;
end;
function NewExtTextOutA(hdc: HDC; x,y: Integer; Options: DWORD; Clip: PRect;
text: PAnsiChar; len: Integer; dx: PInteger): BOOL; stdcall;
Var s: String;
begin
try
if Len<0 then Len:=strlen(text); // ???
if Len>0 then begin
SetLength(s,len);
FillChar(s[1],len+1,0);
Move(text^,s[1],len);
if @ConvertTextFunction<>nil then s:=ConvertTextFunction(s); if @OldExtTextOutA<>nil then
Result:=OldExtTextOutA(hdc,x,y,Options,Clip,PAnsiChar(s),length(s),dx) else Result:=False;
end else Result:=OldExtTextOutA(hdc,x,y,Options,Clip,text,0,dx); except
Result:=False;
end;
end;
function NewExtTextOutW(hdc: HDC; x,y: Integer; Options: DWORD; Clip: PRect;
text: PWideChar; len: Integer; dx: PInteger): BOOL; stdcall;
Var s: WideString;
begin
try
if Len<0 then Len:=strlenW(text);
If Len>0 then begin
SetLength(s,len);
FillChar(s[1],len*2+2,0);
Move(text^,s[1],len*2);
if @ConvertTextFunction<>nil then
s:=ConvertTextFunction(s);
if @OldExtTextOutW<>nil then
Result:=OldExtTextOutW(hdc,x,y,Options,Clip,PWideChar(s),length(s),dx) else Result:=False;
end else Result:=OldExtTextOutW(hdc,x,y,Options,Clip,text,0,dx); except
Result:=False;
end;
end;
function NewDrawTextA(hdc: HDC; text: PAnsiChar; len: Integer; rect: PRect;
Format: DWORD): Integer; stdcall;
Var s: String;
begin
try
if Len<0 then Len:=strlen(text); // ???
if Len>0 then begin
SetLength(s,len);
FillChar(s[1],len+1,0);
Move(text^,s[1],len);
if @ConvertTextFunction<>nil then
s:=ConvertTextFunction(s);
if @OldDrawTextA<>nil then
Result:=OldDrawTextA(hdc,PAnsiChar(s),length(s),rect,Format) else Result:=0;
end else Result:=OldDrawTextA(hdc,text,0,rect,Format);
except
Result:=0;
end;
end;
function NewDrawTextW(hdc: HDC; text: PWideChar; len: Integer; rect: PRect;
Format: DWORD): Integer; stdcall;
Var s: WideString;
begin
try
if Len<0 then Len:=strlenW(text);
if len>0 then begin
SetLength(s,len);
FillChar(s[1],len*2+2,0);
Move(text^,s[1],len*2);
if @ConvertTextFunction<>nil then
s:=ConvertTextFunction(s);
if @OldDrawTextW<>nil then
Result:=OldDrawTextW(hdc,PWideChar(s),length(s),rect,Format) else Result:=0;
end else Result:=OldDrawTextW(hdc,text,0,rect,Format);
except
Result:=0;
end;
end;
function NewDrawTextExA(hdc: HDC; text: PAnsiChar; len: Integer; rect: PRect;
Format: DWORD; DTParams: PDrawTextParams): Integer; stdcall;
Var s: String;
begin
try
if Len<0 then Len:=strlen(text);
if len>0 then begin
SetLength(s,len);
FillChar(s[1],len+1,0);
Move(text^,s[1],len);
if @ConvertTextFunction<>nil then
s:=ConvertTextFunction(s);
if @OldDrawTextExA<>nil then
Result:=OldDrawTextExA(hdc,PAnsiChar(s),length(s),rect,Format,DTParams) else Result:=0;
end else Result:=OldDrawTextExA(hdc,text,0,rect,Format,DTParams); except
Result:=0;
end;
end;
function NewDrawTextExW(hdc: HDC; text: PWideChar; len: Integer; rect: PRect;
Format: DWORD; DTParams: PDrawTextParams): Integer; stdcall;
Var s: WideString;
begin
try
if Len<0 then Len:=strlenW(text);
if Len>0 then begin
SetLength(s,len);
FillChar(s[1],len*2+2,0);
Move(text^,s[1],len*2);
if @ConvertTextFunction<>nil then
s:=ConvertTextFunction(s);
if @OldDrawTextExW<>nil then
Result:=OldDrawTextExW(hdc,PWideChar(s),length(s),rect,Format,DTParams) else Result:=0;
end else Result:=OldDrawTextExW(hdc,text,0,rect,Format,DTParams); except
Result:=0;
end;
end;
function NewTabbedTextOutA(hdc: HDC; x,y: Integer; text: PAnsiChar上一页 [1] [2] [3] [4] [5] [6] 下一页 |
