TRichEdit右键滚屏

韩冰

TRichEdit右键滚屏

void __fastcall TMainForm::RichEditMouseMove(TObject *Sender, / d' d0 f5 l. x% QTShiftState Shift, int X, int Y) { if(RightButtonFlag) ) O# g8 t& O* g{ if(RightY>(Y+8)) { RightY=Y; % E! n& z' n, b0 x! ]: A4 vSendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEDOWN, 0); } % j# m6 j3 ]8 I Aelse if(RightY<(Y-8)) { $ N+ M1 m1 [' j. r pRightY=Y; SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEUP, 0); 6 v+ X& Y2 A' [3 S; c) C% Z} , ]! d! q: u6 b# T; ^' Q. tRichEditDragFlag=true; ; P& d. Q- P+ q; Z6 J+ k} } //-------------------------------------------------------------- void __fastcall TMainForm::RichEditMouseDown(TObject *Sender, TMouseButton Button, TShiftState Shift, int X, int Y) & W' b! N' B' V8 \6 S3 _ Z9 w{ if(Button==mbRight) 8 A, j, C, O( w" O4 Y0 m{ RightButtonFlag=true; Screen->Cursor=crHandPoint; RightX=X; RightY=Y; " V1 z, A8 e- A' f4 r3 }5 ]% }SetCapture(RichEdit->Handle); } else + a) N9 y5 l: xRightButtonFlag=false; 0 g7 p% S3 b% M} 4 [" V! R2 r4 B/ a6 N; O3 H//-------------------------------------------------------------- , l" Z8 _' \8 @4 C u* Pvoid __fastcall TMainForm::RichEditMouseUp(TObject *Sender, 4 z6 r1 g8 \4 N, w, ^" ETMouseButton Button, TShiftState Shift, int X, int Y) { if(RightButtonFlag) ReleaseCapture(); : P+ g2 B ]5 Y2 B: h7 aif(RichEditDragFlag) { 9 c# I% E P. e- S/ l# U ^2 dRightButtonFlag=false; RichEditDragFlag=false; ) |; R1 g) V! t9 C8 U' nScreen->Cursor=crDefault; RichEdit->opupMenu=NULL; ! q. z9 p$ _3 \} j7 |/ n# S$ y- u7 a; m+ lelse { 4 [0 b# [5 X, F2 }: ]7 zRichEdit->opupMenu=RichEditPopupMenu; {$ h5 v% `" b5 v2 L6 `3 B} }