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标题: TRichEdit右键滚屏 [打印本页]

作者: 韩冰 时间: 2005-1-26 12:25
标题: TRichEdit右键滚屏

TRichEdit右键滚屏 4 @) W O% X! [/ f& c9 h

void __fastcall TMainForm::RichEditMouseMove(TObject *Sender, ( C5 o: v" @/ p1 F& a: A2 ]8 R. W) |TShiftState Shift, int X, int Y) 7 J) [4 ]0 D; H+ J& N{+ |& ?5 O0 ?" W4 H& d1 k. O# k0 c" S if(RightButtonFlag) ! C' b$ [$ ]) Y{ 3 i0 P/ |/ ]9 l6 L" Q& J+ [if(RightY>(Y+8))# |. |! ~7 _7 d- T4 k, C+ g {) u+ ?; T/ I: j o( c RightY=Y;, Z1 v% \0 z4 c9 H* F) t( [8 r |' O SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEDOWN, 0); ( N2 c( s- `$ o. K}$ ~' S2 m# T) r# |' j else if(RightY<(Y-8)) / j7 c. }+ B. O& M{3 ^1 Y* j5 p# N2 ^8 j) o8 t% r RightY=Y; 4 a: M$ ?0 i& N4 j0 L8 x& ^" `SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEUP, 0); / u% O; K( R& K0 |& Z8 g% \6 e3 g}. q9 x9 K1 L0 I' y RichEditDragFlag=true;8 _1 e% ~' n1 W1 Q) ]5 v! I$ K N } ) ~9 d! a6 b* e/ L+ q6 G& q( a( l" D}7 q' P6 F4 m- b& ~, V* u. z //--------------------------------------------------------------2 \* u1 J W+ S7 | void __fastcall TMainForm::RichEditMouseDown(TObject *Sender,* l- b! [0 f+ c- O TMouseButton Button, TShiftState Shift, int X, int Y) $ e+ F3 v, c8 b, u/ s9 @{ ! V" n( _4 I4 x8 f1 ~* x; M! Iif(Button==mbRight); [. }# n- {6 ]; D. C5 y2 f { ; t7 [$ ~% c$ `# S) E2 J, ERightButtonFlag=true; * t+ Z$ F7 l" {; B# V* t$ o3 OScreen->Cursor=crHandPoint;. T8 `* h7 [3 z2 V- D x/ j RightX=X; " o& u, {0 {) H% T5 `' w3 P2 KRightY=Y;% p: \ o1 ^/ ]8 M SetCapture(RichEdit->Handle);7 n2 K- ?7 Z/ V2 N6 T9 r% ~8 Z5 r } ( ]0 P* `7 ]# n% t3 @else 5 ]* M. e- I2 [; E% S5 H2 t+ iRightButtonFlag=false;4 L2 n, i8 a/ K6 O } $ h# N: d8 h- V$ o; x//--------------------------------------------------------------/ b+ B- k# i* r$ c/ r( b& N- c void __fastcall TMainForm::RichEditMouseUp(TObject *Sender,& X# D7 _; \) {+ k$ d7 R: x! f; Y TMouseButton Button, TShiftState Shift, int X, int Y)! Q* f$ s- g* d' Z! r2 Z {9 p, N1 V. U; o+ }1 d. d. o4 \ if(RightButtonFlag)1 W& c0 i1 r6 v5 S t7 C ReleaseCapture(); 2 C7 P$ F7 M: k) m) Y7 Xif(RichEditDragFlag); E, Y$ B: N- i { # N$ p/ `' {- ~! q6 ^* @& \RightButtonFlag=false; ( [: w& v4 Z' _& XRichEditDragFlag=false; ( x" R+ C0 j: }/ lScreen->Cursor=crDefault;+ H& @) s8 E! x% H- @ RichEdit->opupMenu=NULL;" t9 y: r' ^3 O: B5 M: { } 9 |: O4 X; g, V. eelse0 }% c' t# `( _: Z { 9 N4 l% U. V# ~. v, fRichEdit->opupMenu=RichEditPopupMenu;4 y4 I$ d' c5 v9 b3 D0 i5 r } : h0 k5 B' ~. u" Z0 ?} " H/ x- S l# G

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