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TRichEdit右键滚屏
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, E; c* G, a/ w3 L5 g void __fastcall TMainForm::RichEditMouseMove(TObject *Sender,! V: u$ ] A8 v1 {9 I
TShiftState Shift, int X, int Y)
1 W. h" R- U, R$ \{
. }9 d2 Y/ b3 k7 n0 kif(RightButtonFlag)- ?$ |/ s; Q0 m% K
{
+ ^9 e8 p5 G- qif(RightY>(Y+8))
' ^" ^0 }3 e3 q1 C2 e- B{
7 f3 o' m7 s1 tRightY=Y;/ d$ \" v _+ P* X
SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEDOWN, 0);3 l9 \1 |; ^! @& f7 S7 J3 b+ m
}
6 E# i/ f, i* Z W% Relse if(RightY<(Y-8))
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4 _6 {( v+ y( A1 \7 {RightY=Y;6 T. B3 k4 B2 d0 l2 A
SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEUP, 0);
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RichEditDragFlag=true;
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//--------------------------------------------------------------
5 r& ^. z, h; B6 m+ o9 S% x9 Ovoid __fastcall TMainForm::RichEditMouseDown(TObject *Sender,
: y0 ` Z1 t8 P9 k& [* zTMouseButton Button, TShiftState Shift, int X, int Y)
) ^: i: W% d% J9 h/ M' L{
! v7 ^7 z: e) t C5 H9 d5 cif(Button==mbRight)' [0 A, e8 Q. ^' I: `5 P
{
/ d9 C0 s5 R; s: A7 xRightButtonFlag=true;/ D6 C& j. ^" m# p: a. W
Screen->Cursor=crHandPoint;
1 B, u$ i2 |' Z" e HRightX=X;
. ?1 W. F8 _# M. K# Q4 W, S5 o& NRightY=Y;% m) ]8 G9 x, D& ]9 ?* t3 {2 U
SetCapture(RichEdit->Handle);6 o5 n6 S+ @6 u7 V4 N% @' w7 w
}
, J2 ^3 t9 \% I3 y; ?else
' `9 A( M- J0 ?+ ]; z$ l+ h2 ERightButtonFlag=false;
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7 p/ e/ {2 m: f, s1 J//--------------------------------------------------------------" Y/ L( y. D" w, K$ b
void __fastcall TMainForm::RichEditMouseUp(TObject *Sender,* T. R; _6 D/ i3 S2 P% W
TMouseButton Button, TShiftState Shift, int X, int Y)5 I' {( J8 C. p2 F7 t9 [
{
& h5 h; x- Z& G8 m6 Z* K7 u1 T* yif(RightButtonFlag)* S K s$ I. t) b. A {
ReleaseCapture();0 W2 Q) }' r# a; q d' H
if(RichEditDragFlag)5 B' b' | \) R: P+ S; h) b
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RightButtonFlag=false;
$ w- c$ c- Q. tRichEditDragFlag=false;
0 H i( X: O1 R. Z1 J# C8 VScreen->Cursor=crDefault;& y6 `9 X0 x5 I# `9 P% ?" U: K
RichEdit-> opupMenu=NULL;
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' @7 T8 W1 w6 K6 e; [0 \- zelse
: n5 C, G; j4 U" ~{
7 R7 R" H9 N9 M% M6 V4 o3 J: l. fRichEdit-> opupMenu=RichEditPopupMenu;
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