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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 |正序浏览

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TRichEdit右键滚屏6 [# a- F; Y4 N- ?2 j" Q0 G" }

void __fastcall TMainForm::RichEditMouseMove(TObject *Sender,. W3 V4 J& t. @4 t" P TShiftState Shift, int X, int Y)1 S5 o1 \/ a. r1 S. Y: Z {! v i w( h1 I if(RightButtonFlag) # r* O3 t* j3 ?{) F) t# D% r) S9 B r7 C) c, u1 p if(RightY>(Y+8))# `5 [9 I* Y6 s: j {* w4 N R! @* J2 a8 \/ u( b3 W1 |+ r RightY=Y;# I: @: K) ~, ^5 s SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEDOWN, 0);8 I1 X! ~% r' C$ ^) ?% r }2 L. z# X- h& p/ e2 A else if(RightY<(Y-8))! P8 t- s0 m2 P/ [0 x4 w/ k/ ^ { / k- f+ C" Y4 e/ R' \RightY=Y;) s* G/ T- f4 i3 d4 X SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEUP, 0);) w8 y; W; q0 v+ s: @; h% o# ]4 f }* m! X$ s* z4 @* U RichEditDragFlag=true; 6 L2 B1 B$ f$ S$ w}; F3 I% `8 S. n) ]0 \1 Y }1 ^4 M7 z/ {* b //--------------------------------------------------------------# M7 x# c3 p8 y. Q+ S void __fastcall TMainForm::RichEditMouseDown(TObject *Sender, # l) o; @: P W5 pTMouseButton Button, TShiftState Shift, int X, int Y) , M: t+ N: t1 t3 N' s{ b1 Q1 H0 ]. N1 Eif(Button==mbRight)$ z; L6 E0 c4 m8 e# S { " m7 v, v: R! u& pRightButtonFlag=true;& r! Q# b+ H+ k- e9 F- U Screen->Cursor=crHandPoint; ! e7 [- b, p3 v: L& x4 [2 g5 qRightX=X; , p# s5 q5 i1 W( YRightY=Y;" k9 G' A- e+ @6 |: t2 Z( r- D' O SetCapture(RichEdit->Handle);) _( P A3 l# v" i2 B+ _- @ }: K; D; Z% X: q: O% m0 D n else, J+ N7 t& N' c5 I. ?0 c RightButtonFlag=false; I- ` t& ~: \3 e' s } " ]* @( h* v Z W# b4 x//--------------------------------------------------------------; z5 ]( m6 |5 X: S2 \! O void __fastcall TMainForm::RichEditMouseUp(TObject *Sender, 5 p( s* T' x PTMouseButton Button, TShiftState Shift, int X, int Y)/ c A9 V& y; S1 \ { ! U' ~; I% s2 sif(RightButtonFlag) $ m& |* ] s% w% J L% B/ q2 VReleaseCapture(); : \9 u \: J3 X* w9 ~if(RichEditDragFlag)2 L1 T! |# W" ~" E2 Y# z9 G {, y+ Y) [5 ~0 {; p RightButtonFlag=false;+ h6 N* @. @) ?/ _/ Z' ?) o RichEditDragFlag=false;+ [; ? j; _8 ?# [7 u& Q( u Screen->Cursor=crDefault;" g; g4 I3 x0 }8 R0 m7 ?+ u' g RichEdit->opupMenu=NULL;- r& b: n* t8 Y; O }% Q0 R# i5 X* k6 P' O8 \/ X else 1 ?& o& W4 h& _, y) Z{$ W2 ?7 @/ e1 b* v9 n: N+ d RichEdit->opupMenu=RichEditPopupMenu; * r0 @! w! Z7 a% b2 {& _2 C} 0 T( q* I9 I5 P9 Z: B+ x( z7 |} & I8 A4 x E+ s( }% p0 [3 L