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TRichEdit右键滚屏

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韩冰

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电梯直达

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发表于 2005-1-26 12:25 |只看该作者 |倒序浏览

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TRichEdit右键滚屏 ( l4 B% a* V, E1 ]4 s

void __fastcall TMainForm::RichEditMouseMove(TObject *Sender,' x' E3 K% k% `) U1 Z/ ~3 }- N! Q TShiftState Shift, int X, int Y)% H" [& c0 w6 L# [* A { $ Q9 _0 r( q. A# A. K! rif(RightButtonFlag)$ k1 s! E7 k: c6 _* Q+ v { ! o2 n6 ~5 \- z" rif(RightY>(Y+8))9 v* I$ H" ?6 f% U/ Q; b {! H, d8 I0 S3 C) x RightY=Y; 1 i( B5 V$ X# y0 E( jSendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEDOWN, 0); 9 s6 t$ T8 n9 }( u) X: n/ z X& Z4 Z} 7 b0 f7 _% o" g6 _else if(RightY<(Y-8)). _% j2 z. v& O$ ` {) Z; A3 X: ~/ t RightY=Y; ( s2 r& F" h( Z+ p$ j7 k' uSendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEUP, 0);0 d5 ?. r0 K! h, _5 o4 B) c8 l' u }. P7 n9 n' g8 O1 z RichEditDragFlag=true;. T1 Z$ f. B0 x% ~2 M7 f }# l. x: p% d. a( M; p& P u* Q. H } : l. q0 C2 j: d2 i! c//--------------------------------------------------------------) V: f" c' X& V7 O void __fastcall TMainForm::RichEditMouseDown(TObject *Sender,/ B* I( f5 y; d) C2 ~ TMouseButton Button, TShiftState Shift, int X, int Y) 1 b3 h7 ]3 e" d# c6 W4 D. Y. k{. h" C* U5 W8 n9 w F( K" H! g if(Button==mbRight)) R+ I Y( V+ a { 7 ?% Y* {$ m- ]+ _RightButtonFlag=true;: \, \7 J2 |0 _! Q" R9 f+ F1 L! H Screen->Cursor=crHandPoint; # b, F# v' g2 M; C5 k( {) dRightX=X; " a0 M& l; N' s0 ]3 }4 |RightY=Y; * i+ |: E- Q) R' A9 f; |SetCapture(RichEdit->Handle); * O, @) R+ A5 Z; r4 w} & r( c' {0 s$ p6 D, A/ M: X' gelse 2 D; e0 T, `- G( }) xRightButtonFlag=false; 5 J3 o8 a1 w2 b+ S F} , b; U5 W; O. ^ H//--------------------------------------------------------------( y5 g& m r8 c. ^" K' d void __fastcall TMainForm::RichEditMouseUp(TObject *Sender, " k( ~- a& z6 r) zTMouseButton Button, TShiftState Shift, int X, int Y) # J* [( H5 g$ P( _6 e7 m{5 o O! P4 |. r8 g6 h, h if(RightButtonFlag) # B% L- G7 v7 L- w! n9 m9 r5 ]& CReleaseCapture();, u' G, h( d2 g8 X if(RichEditDragFlag). \" t1 x( D- O, `& Z {' w! O! e p6 ^. }8 j w$ @ RightButtonFlag=false;; t- t2 I7 C3 F# [ RichEditDragFlag=false; " t) x/ O ^$ I8 I4 rScreen->Cursor=crDefault;# t, X* L' }! _1 D2 ` RichEdit->opupMenu=NULL; : {8 b I& Z) Z} . [2 p" K7 e. z! h/ e2 S+ |else' v# z; M8 K9 I0 X I: J) v; B { - A4 Y& a5 @- N6 O" |: D7 e0 A: JRichEdit->opupMenu=RichEditPopupMenu; + B$ W( X) @# I5 J. @% X$ p7 F}! \8 v+ l; E% T" d- d ] } * s8 w+ C: z' S u1 b