TRichEdit右键滚屏

韩冰

TRichEdit右键滚屏

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void __fastcall TMainForm::RichEditMouseMove(TObject *Sender, A1 b, \5 N$ j0 s- h2 u' |TShiftState Shift, int X, int Y) { if(RightButtonFlag) { , D. T& k7 p. q) w0 M- z. t" `if(RightY>(Y+8)) { 4 C* u2 ]. L# f+ G+ Y7 W( h9 [2 cRightY=Y; 4 p9 k( Z1 e3 y" @5 NSendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEDOWN, 0); } else if(RightY<(Y-8)) 9 H. P; N& Y& b3 e) D. r{ RightY=Y; / K2 w' G1 R0 \" d/ L# @5 H4 v" aSendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEUP, 0); 3 H) ]" j" q' N$ R} RichEditDragFlag=true; % y+ T) |4 A4 m1 W} } //-------------------------------------------------------------- void __fastcall TMainForm::RichEditMouseDown(TObject *Sender, / Y+ T* M. |; L! @9 V) y9 @4 k/ XTMouseButton Button, TShiftState Shift, int X, int Y) 6 ~/ a! Q3 |( d3 W2 ~6 x9 J2 R{ ; d. M" z5 }1 aif(Button==mbRight) { RightButtonFlag=true; Screen->Cursor=crHandPoint; RightX=X; RightY=Y; SetCapture(RichEdit->Handle); ; Z4 |. C, o3 w7 d/ f2 O} 2 z" q2 p* a% V# C- r: | Zelse RightButtonFlag=false; } //-------------------------------------------------------------- void __fastcall TMainForm::RichEditMouseUp(TObject *Sender, 6 S+ p5 g- [. a. |/ W& B1 d; QTMouseButton Button, TShiftState Shift, int X, int Y) { if(RightButtonFlag) ReleaseCapture(); if(RichEditDragFlag) { RightButtonFlag=false; % Q0 a3 M6 h# m/ GRichEditDragFlag=false; Screen->Cursor=crDefault; RichEdit->opupMenu=NULL; } else { * ~0 d; f$ M' g$ V+ ^* }RichEdit->opupMenu=RichEditPopupMenu; } }