TRichEdit右键滚屏

韩冰

TRichEdit右键滚屏

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void __fastcall TMainForm::RichEditMouseMove(TObject *Sender, 6 C/ f; k7 z. o6 Y% rTShiftState Shift, int X, int Y) { if(RightButtonFlag) { if(RightY>(Y+8)) { 3 G" U) d5 b# F& A! }' bRightY=Y; SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEDOWN, 0); # F, U0 \; R! ?5 b; ]2 ^7 f+ C" g7 Z3 w} else if(RightY<(Y-8)) 4 P; y, z0 i/ k. z( a+ \* G: E{ # c) U. |* I& z5 D5 X0 `! y" wRightY=Y; SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEUP, 0); } / N* Q( h; H3 i9 {$ tRichEditDragFlag=true; , f9 S6 T: q6 t} } , L6 m8 j4 n N2 U( q7 i//-------------------------------------------------------------- void __fastcall TMainForm::RichEditMouseDown(TObject *Sender, TMouseButton Button, TShiftState Shift, int X, int Y) { if(Button==mbRight) ; ^% n) N3 n+ W- @# U{ - H B. d& D, R8 [; [1 U$ aRightButtonFlag=true; 1 A/ U- y2 [; Q. u% s# ]) B3 T, w/ hScreen->Cursor=crHandPoint; . E0 v# p0 }: n2 z/ Q0 ]" YRightX=X; / S2 Z- N6 L1 z& m8 C" d- @RightY=Y; . `' ?, T% V; f- L7 z4 XSetCapture(RichEdit->Handle); } else RightButtonFlag=false; } ! y* t/ }5 {( L9 l. z//-------------------------------------------------------------- void __fastcall TMainForm::RichEditMouseUp(TObject *Sender, ) J- ~, E% Z% `3 l; }/ l2 uTMouseButton Button, TShiftState Shift, int X, int Y) 4 d$ C5 Y+ q% a; ` |( h0 k& N6 q k{ : C- {9 s8 J4 x9 \if(RightButtonFlag) ! M& S' B! o- [/ u' q1 e/ OReleaseCapture(); if(RichEditDragFlag) - O4 q& u# y3 ?5 n: J{ RightButtonFlag=false; 8 O; Q4 _$ l4 P% m0 u, F+ L5 L2 KRichEditDragFlag=false; / z* T- s! |+ lScreen->Cursor=crDefault; ' a7 _) U/ E) [: y7 [' f3 \- r) XRichEdit->opupMenu=NULL; } / _ f3 K% E* ^else { RichEdit->opupMenu=RichEditPopupMenu; 0 |# h2 P5 V. Y} }