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TRichEdit右键滚屏

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韩冰

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电梯直达

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发表于 2005-1-26 12:25 |只看该作者 |倒序浏览

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TRichEdit右键滚屏 0 g$ F5 l5 `9 e. l4 M9 Y

void __fastcall TMainForm::RichEditMouseMove(TObject *Sender,: z- l6 e$ G8 z( ?/ E TShiftState Shift, int X, int Y)& `# c$ B* P8 i( P4 { {2 e6 o! d# Q" |" Z, I if(RightButtonFlag)2 m O+ H3 H% i, b3 ^& Z. K { # a' f+ ?" ^7 \6 Y' K6 B" m5 pif(RightY>(Y+8)) ; Y0 i7 l& T) n. _4 W O+ L{ : B, u0 q$ w& z; ]RightY=Y;. y* F7 T* T) M SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEDOWN, 0); ' L6 `+ }- r7 ]& u" n} % G6 P0 e# A3 e% a3 X/ Gelse if(RightY<(Y-8)) : d" ?5 ?" r( |! M{' F% m6 o, Q1 a! T2 N% V RightY=Y;) f/ s3 R; K; s5 T; x& T SendMessage(RichEdit->Handle, EM_SCROLL, SB_LINEUP, 0);( l( ~; J! ?( h* i4 C } * I6 M* l0 C N8 h# ]RichEditDragFlag=true;- k9 L* n, q0 i# {0 d7 J# \0 @ d4 Q } ( N0 }$ J- O" v& g; P7 _; ?1 x}' L7 u9 ~3 o% E2 B$ _ //--------------------------------------------------------------2 n b; d& k- Y6 a' ^8 G void __fastcall TMainForm::RichEditMouseDown(TObject *Sender,. @$ {3 `2 H3 J- i7 `& A; |4 d TMouseButton Button, TShiftState Shift, int X, int Y): k f* A7 x, d6 p& ^& Z {2 H7 l4 k4 w- ]! ^" x if(Button==mbRight)& m& O9 d5 s' K) s+ d6 g/ { {) V: ] X l* s: \ RightButtonFlag=true;& E3 Y4 l$ a, P9 p1 W4 q Screen->Cursor=crHandPoint;* } r3 w; g5 O RightX=X;% z$ K+ J/ b3 T. `; r RightY=Y;" ~ b. E: Q8 Q) m7 `$ Y+ { SetCapture(RichEdit->Handle);0 h; Z# _6 C) j6 c0 r ~) m9 I } + q" G3 j& W6 Y/ L* _2 j% xelse1 z, c2 w' C. z1 P RightButtonFlag=false;" W# x9 D- c! l" o } 0 j% `+ [3 d" M2 W f8 P, `//--------------------------------------------------------------: u$ ?! q) P5 Q3 t. y6 B3 r, X void __fastcall TMainForm::RichEditMouseUp(TObject *Sender, ) h' n$ L$ Z- oTMouseButton Button, TShiftState Shift, int X, int Y)5 n% G% f3 m4 B, A! `8 X { 8 h4 n5 N) ?4 b6 ^6 N: ?8 bif(RightButtonFlag) ) u& w! l- G& m4 b$ n! j% `# DReleaseCapture(); . o8 W7 P" Z5 {6 ^) Y% J0 pif(RichEditDragFlag). R) ^ Y1 T+ Q6 T; e5 y {3 g( ?& l$ ^* w$ z B" T" J' Y RightButtonFlag=false;0 |+ }4 y: l; c1 z: `* ]2 o. p RichEditDragFlag=false; % Z4 V- Z) K1 {' YScreen->Cursor=crDefault; 5 P1 h, y" P! YRichEdit->opupMenu=NULL;% s1 Q2 [: j% ]9 g2 g } 7 J9 T ]+ P1 f. l/ Oelse 3 g, N) X6 t+ `{ 1 ^3 v( o/ g) v+ U) gRichEdit->opupMenu=RichEditPopupMenu;9 A) ?# s; r2 B5 R } ! L) c, _' ~" J, m} 4 @8 }0 Q* _) j- ~# L% {, K