TRichEdit右键滚屏

韩冰

TRichEdit右键滚屏 6 K! A4 v1 z8 b2 w

void __fastcall TMainForm::RichEditMouseMove(TObject *Sender, " F+ V5 l# D+ B) r* @6 h7 N# E6 pTShiftState Shift, int X, int Y) { ( ^6 f2 ~# z8 a7 U* r Iif(RightButtonFlag) { 6 v4 L* s: Z' dif(RightY>(Y+8)) { $ T: k) ?: @3 DRightY=Y; % y. P# t- x {1 A; Q# _SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEDOWN, 0); } else if(RightY<(Y-8)) { ' J' t ]3 L/ U7 d8 Y( z: ?RightY=Y; SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEUP, 0); 7 y: I. h$ W/ B! H' m} & j K' w4 L; X URichEditDragFlag=true; } } . m# H( _6 P% }/ I) k( ^//-------------------------------------------------------------- void __fastcall TMainForm::RichEditMouseDown(TObject *Sender, ' e+ T6 z; p6 rTMouseButton Button, TShiftState Shift, int X, int Y) { 6 x) @1 ]' B5 Z. e9 l' N oif(Button==mbRight) ; p' @' L5 v+ Y{ RightButtonFlag=true; ) j/ t) h! ]4 ~0 k1 HScreen->Cursor=crHandPoint; ) t) [2 u9 Q3 O2 vRightX=X; RightY=Y; SetCapture(RichEdit->Handle); ( M( h/ e+ N# k2 p) T1 _} 4 l8 V: H6 ? u7 f) X+ w1 @6 p0 Lelse RightButtonFlag=false; - G$ ^- b, B! Y( ~) V} - `5 z' b1 E A% b//-------------------------------------------------------------- void __fastcall TMainForm::RichEditMouseUp(TObject *Sender, TMouseButton Button, TShiftState Shift, int X, int Y) - V: A! E: \) S* l{ / c* F7 m; K* ]4 |/ mif(RightButtonFlag) , Z$ H+ q$ e" y- nReleaseCapture(); if(RichEditDragFlag) { : y# ?! A, H( b" e# m7 mRightButtonFlag=false; ) o M2 I" D+ ?RichEditDragFlag=false; Screen->Cursor=crDefault; RichEdit->opupMenu=NULL; } else { RichEdit->opupMenu=RichEditPopupMenu; 2 a* e3 q8 r5 }} } $ ~; A% Y/ K0 X8 l; A4 _, a