TRichEdit右键滚屏

韩冰

TRichEdit右键滚屏

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void __fastcall TMainForm::RichEditMouseMove(TObject *Sender, TShiftState Shift, int X, int Y) ) @5 E3 b3 m c; j( h2 L# O{ $ ^! k4 R4 W- N+ `if(RightButtonFlag) & y) N- w, c; k" w{ if(RightY>(Y+8)) { 2 u' m% g& k+ KRightY=Y; SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEDOWN, 0); 0 b ^$ h/ W, B} else if(RightY<(Y-8)) 6 |+ f* [+ [5 F6 L+ _& c{ RightY=Y; SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEUP, 0); } 6 s d6 ?1 M1 e3 {3 WRichEditDragFlag=true; } ' z! L# D3 ~, E' d} //-------------------------------------------------------------- - O3 X5 b7 \4 P% Lvoid __fastcall TMainForm::RichEditMouseDown(TObject *Sender, TMouseButton Button, TShiftState Shift, int X, int Y) 9 y/ i/ F- E' H% w{ if(Button==mbRight) 3 W0 g9 f1 `8 ]( T" v9 ]{ ) g* L+ E/ A+ s; BRightButtonFlag=true; . D" y" A3 J. H% p' I: \0 r/ AScreen->Cursor=crHandPoint; RightX=X; RightY=Y; , X5 A1 k! T2 z' _- HSetCapture(RichEdit->Handle); } & [7 t; y* `5 n+ Kelse 4 H2 d$ k" w. a& M/ l9 y% q/ v/ t* f, iRightButtonFlag=false; } 6 X/ H$ G7 o2 N/ ?//-------------------------------------------------------------- , N, S+ R, X5 W5 L9 `+ U! dvoid __fastcall TMainForm::RichEditMouseUp(TObject *Sender, , s t) e- ^$ \5 V, Z. mTMouseButton Button, TShiftState Shift, int X, int Y) 3 x# _. r4 i' j I7 Z7 S& v6 i{ if(RightButtonFlag) ReleaseCapture(); 5 P; P( ~& d/ m9 A0 uif(RichEditDragFlag) { % o# ]6 |/ ^ r9 b3 lRightButtonFlag=false; RichEditDragFlag=false; Screen->Cursor=crDefault; + w2 t8 L1 v2 D! D7 f: _RichEdit->opupMenu=NULL; } else { RichEdit->opupMenu=RichEditPopupMenu; } b" k6 V3 i( x9 m}