TRichEdit右键滚屏

韩冰

TRichEdit右键滚屏

void __fastcall TMainForm::RichEditMouseMove(TObject *Sender, TShiftState Shift, int X, int Y) { ) a8 e3 M4 W, J s$ H2 `" Dif(RightButtonFlag) % U" Y2 \7 @$ ?, ~{ $ p* U" ?3 ?( o) e; t. n! Xif(RightY>(Y+8)) 0 q& y- l! O+ m{ , t; R+ `% Q5 W" zRightY=Y; 5 v( A, s# N1 q1 _6 @% R3 {* F6 fSendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEDOWN, 0); } . c3 F5 o L- H% x) A! {% ?& telse if(RightY<(Y-8)) ) C) Q- r. @8 Q* s$ F! V2 y{ RightY=Y; % h, w4 K) R# q7 O1 j5 wSendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEUP, 0); & V# a2 S9 W. a# b ^} ) d) B1 q6 B$ K, |" U! ORichEditDragFlag=true; 0 |% {) W, ]3 Q2 ?" i} 0 s# z: m1 r5 H! S8 D; w$ i} 4 M& N& q: B7 l+ B" M& q//-------------------------------------------------------------- void __fastcall TMainForm::RichEditMouseDown(TObject *Sender, 2 T( O3 d z8 {7 mTMouseButton Button, TShiftState Shift, int X, int Y) { " l: X+ ~7 X2 o& ^if(Button==mbRight) { RightButtonFlag=true; 3 q+ ?) o% |* h: zScreen->Cursor=crHandPoint; 1 U* N7 A2 ^/ d4 W% r; a$ IRightX=X; ( M }* n6 e# i- @$ b- ^( \RightY=Y; SetCapture(RichEdit->Handle); } else RightButtonFlag=false; } 5 \" N& f9 ^6 |( F# e//-------------------------------------------------------------- 6 j' ]/ d$ s5 G- Q1 Q' hvoid __fastcall TMainForm::RichEditMouseUp(TObject *Sender, : w! q8 o K9 T4 N' W5 UTMouseButton Button, TShiftState Shift, int X, int Y) { if(RightButtonFlag) $ E1 `( t1 k" N! p6 Z: o" P: U {ReleaseCapture(); 9 u; y, _ o5 ?7 `! |( M& |+ Aif(RichEditDragFlag) 4 @4 T) I# f% W8 v, p! ?{ % S% F0 L7 @' o! S; ~5 i+ o3 g# ?4 O- SRightButtonFlag=false; + ^+ S- C. ?+ _' a. k5 RRichEditDragFlag=false; Screen->Cursor=crDefault; - R" P. h+ b4 ]' HRichEdit->opupMenu=NULL; : l7 w5 I$ g5 L3 @} : \. [: _! H& i' g% w1 w. Uelse { RichEdit->opupMenu=RichEditPopupMenu; 3 z! u* P* \3 _! X+ U4 b; A} H: z; ]+ c8 ]" G9 d3 F}