TRichEdit右键滚屏

韩冰

TRichEdit右键滚屏 0 @9 u. y" {# X0 @2 ^! ^4 H

void __fastcall TMainForm::RichEditMouseMove(TObject *Sender, . L) g, p% z! B. W9 v4 M& O) ]TShiftState Shift, int X, int Y) : F+ l# w1 Q1 O& X4 n$ l{ if(RightButtonFlag) { . H, T: ]; m5 L. D* N! }if(RightY>(Y+8)) { RightY=Y; 0 f0 d, f6 J+ s2 V* K, kSendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEDOWN, 0); $ U1 t) d/ h. M. ~4 |) M- Q* f4 ^} 2 J+ m9 I/ l4 a% Z- q+ pelse if(RightY<(Y-8)) { RightY=Y; SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEUP, 0); 6 |2 A4 @( I( \} & I# N# n' o& ]/ uRichEditDragFlag=true; } } //-------------------------------------------------------------- void __fastcall TMainForm::RichEditMouseDown(TObject *Sender, - { O& l+ `# D$ kTMouseButton Button, TShiftState Shift, int X, int Y) 6 r% e- w# x p5 u{ if(Button==mbRight) { 1 T/ d% t( L0 `( rRightButtonFlag=true; Screen->Cursor=crHandPoint; RightX=X; y: u; o: A/ R E# PRightY=Y; SetCapture(RichEdit->Handle); 0 G8 z2 @3 s1 S) Y} - k" v0 ^, ~; N& I Felse RightButtonFlag=false; ! m6 C P( q. ~# _3 t+ R} ) N6 X* @3 G6 ]( W- S) E" N//-------------------------------------------------------------- 7 W! L1 `7 t3 q& }: Tvoid __fastcall TMainForm::RichEditMouseUp(TObject *Sender, TMouseButton Button, TShiftState Shift, int X, int Y) { if(RightButtonFlag) # Y+ K5 I @* kReleaseCapture(); 6 C. `9 H5 q2 ^" J- t5 C! [5 i6 _; wif(RichEditDragFlag) { ( B: @6 X# q. E0 m- b4 W3 a0 GRightButtonFlag=false; 5 Y( H- r) _4 _1 P3 c( WRichEditDragFlag=false; & |# J6 `3 j# L: |0 k3 wScreen->Cursor=crDefault; : i& H! f/ D2 P k& w. M8 Y8 X& zRichEdit->opupMenu=NULL; } else { # ~- Q( n: ^/ }& F$ c) {1 sRichEdit->opupMenu=RichEditPopupMenu; } 3 }/ x* V# c9 m4 j3 c7 [& b! z. y}