TRichEdit右键滚屏

韩冰

TRichEdit右键滚屏 ) [ l# N r3 X4 c# f2 f- ?

void __fastcall TMainForm::RichEditMouseMove(TObject *Sender, TShiftState Shift, int X, int Y) 6 l2 u& a. Y) b; o{ if(RightButtonFlag) & a3 ?4 b% d1 {& [. Q( B{ ! z: @% R( _( X' |if(RightY>(Y+8)) : s( L! ~1 c3 |' x# Q{ ; b: `1 w) v& }& \8 O, d* D# d, IRightY=Y; SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEDOWN, 0); $ I K4 h, U I" i% u( K1 S' H$ [} 2 C# z' E- n7 W/ |5 [: C* h9 Uelse if(RightY<(Y-8)) { 3 r* j: a$ d8 B$ dRightY=Y; 8 z! a" ]6 p5 ~+ J6 k1 d! {SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEUP, 0); 9 V4 }5 N- d! a5 {- z} RichEditDragFlag=true; } } 6 p6 G6 L- `& I* P# u* l//-------------------------------------------------------------- void __fastcall TMainForm::RichEditMouseDown(TObject *Sender, $ W! s5 J- B% \1 n1 BTMouseButton Button, TShiftState Shift, int X, int Y) { if(Button==mbRight) { 2 z8 r4 K# _1 F& }, I! ?" }RightButtonFlag=true; 4 G: y; p2 v3 H" ^; P# X& iScreen->Cursor=crHandPoint; / P' u9 C! q/ D2 ~, VRightX=X; RightY=Y; SetCapture(RichEdit->Handle); } : s x7 Z' ] @0 Z9 l3 f% V g9 G' ^else RightButtonFlag=false; ( ]- Q1 P% o" U1 z/ c/ ^2 b( u} //-------------------------------------------------------------- void __fastcall TMainForm::RichEditMouseUp(TObject *Sender, - g6 I f! M. o5 O! r; m0 }TMouseButton Button, TShiftState Shift, int X, int Y) : T1 L# [7 _7 U{ if(RightButtonFlag) ReleaseCapture(); * a0 x- X9 q |" J1 _& k) ^% N* T+ {if(RichEditDragFlag) { 0 G2 H% y, `4 A+ o+ _RightButtonFlag=false; $ D0 X! a5 `6 @RichEditDragFlag=false; ! @% v/ o9 b/ {2 B* \* {# H! [) WScreen->Cursor=crDefault; % s7 ^- s7 q2 w# uRichEdit->opupMenu=NULL; } else + ]0 l0 M- V9 F{ RichEdit->opupMenu=RichEditPopupMenu; ' _5 W& f$ v5 Y1 `' ^, p) e# J} }