TRichEdit右键滚屏

韩冰

TRichEdit右键滚屏 % j" |* U# ]3 o1 a3 k+ A- Q0 C

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void __fastcall TMainForm::RichEditMouseMove(TObject *Sender, TShiftState Shift, int X, int Y) { % G7 w+ U5 f( \if(RightButtonFlag) { if(RightY>(Y+8)) { RightY=Y; 3 u+ m6 h# o: b, y0 \SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEDOWN, 0); } + G+ q! p5 k; z$ C" c7 yelse if(RightY<(Y-8)) 4 b; L" }) X$ L/ @* F# ~. Z{ RightY=Y; SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEUP, 0); : e6 A+ K3 Z' p- I} 7 d* V" G9 B3 V& `% E1 z: BRichEditDragFlag=true; 3 J0 @2 k i( P. ]. C} ; @# _5 S' Z6 K: G} - ?$ L" L/ f* I" `" E4 F//-------------------------------------------------------------- void __fastcall TMainForm::RichEditMouseDown(TObject *Sender, - D9 i. {+ d+ LTMouseButton Button, TShiftState Shift, int X, int Y) { if(Button==mbRight) , o6 ]9 H5 m# F{ : O/ a% G6 [' c' L% tRightButtonFlag=true; Screen->Cursor=crHandPoint; RightX=X; RightY=Y; SetCapture(RichEdit->Handle); } . c% U& ~ H# v( N$ helse : x4 i, Y1 ], [3 Z+ {RightButtonFlag=false; } //-------------------------------------------------------------- . ?9 u0 C! h+ I j' J/ Jvoid __fastcall TMainForm::RichEditMouseUp(TObject *Sender, TMouseButton Button, TShiftState Shift, int X, int Y) 2 V3 N1 r- r8 {; Y- P' e{ if(RightButtonFlag) ReleaseCapture(); 7 J# {- t$ `8 h, |* E7 _if(RichEditDragFlag) 2 g3 z2 f- Z. u7 ~% h3 [{ 3 H2 k( O( a+ Q" KRightButtonFlag=false; RichEditDragFlag=false; 1 q- c( d$ ]& MScreen->Cursor=crDefault; 6 t, x& ?* _! i" ~' I) kRichEdit->opupMenu=NULL; } else { RichEdit->opupMenu=RichEditPopupMenu; : j1 \( l) R' ?5 {- Q} }