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来自: http://social.msdn.microsoft.com ... 9-a8c9-2e27eb9ec058% M; G* J2 m& Y6 W e+ I, B' X! w6 E
By Mukta & ToxicDream- ; Z1 Y, y9 U, @7 u+ L) M
- //for delphi 5
# ]& ?, ?9 i+ F+ I - unit MMDevApi_tlb;
4 u8 K" `4 M2 a" x - L: H Z6 N7 a: ^+ P
- interface
) a) ~: p/ W7 M: e8 O% r# s - uses Windows, ActiveX, Classes, Graphics, OleServer, OleCtrls, StdVCL,ComObj;
# I& W3 ]/ F7 {7 p1 _! t7 } - const
8 P6 I# S0 q u4 d2 Q8 A9 f5 x2 | - // TypeLibrary Major and minor versions, r) E3 f8 ]9 C7 f3 C$ H9 o
, K, h' ^( ?, v \# J ^- CLASS_IMMDeviceEnumerator: TGUID = '{BCDE0395-E52F-467C-8E3D-C4579291692E}';* @6 d& A8 @0 i* u. D
- IID_IMMDeviceEnumerator: TGUID = '{A95664D2-9614-4F35-A746-DE8DB63617E6}';6 a3 s) x2 y/ R0 y; y
- IID_IMMDevice: TGUID = '{D666063F-1587-4E43-81F1-B948E807363F}';# l3 `; R) j- R
- IID_IMMDeviceCollection: TGUID = '{0BD7A1BE-7A1A-44DB-8397-CC5392387B5E}';
& ]' M" G1 Z$ O* s3 s8 O6 Y - IID_IAudioEndpointVolume: TGUID = '{5CDF2C82-841E-4546-9722-0CF74078229A}';4 v m0 S z. T4 v A
- IID_IAudioMeterInformation : TGUID = '{C02216F6-8C67-4B5B-9D00-D008E73E0064}';
- T2 a* H3 ~0 x: ^7 l5 `7 U - IID_IAudioEndpointVolumeCallback: TGUID = '{657804FA-D6AD-4496-8A60-352752AF4F89}';
# m" Y9 Y: y1 o$ x/ ~, N
4 c) }9 n! T) s! S7 d- DEVICE_STATE_ACTIVE = $00000001;' A A+ q2 s' |" }
- DEVICE_STATE_UNPLUGGED = $00000002;
' a3 X; {: }' p# W% O# I - DEVICE_STATE_NOTPRESENT = $00000004;
2 V. f5 z0 [* B8 t+ r - DEVICE_STATEMASK_ALL = $00000007;% S2 q0 G P/ k8 I1 J9 ^9 F& t6 P) p
- ) ~( x0 x- ^- X/ B8 _( L
- type3 O6 ~# s) H- ]$ ~( d8 D M1 C
- EDataFlow = TOleEnum;- L* X3 a+ k8 b& J; n
- const/ n+ ~+ t6 O/ r4 ^! ?, D: P4 y+ I
- eRender = $00000000;
0 m/ t% m% [/ d6 d S4 e+ ^" u$ k - eCapture = $00000001;2 O* b m' m, @! i! g" ~( h( Y
- eAll = $00000002;
# F1 j, ]/ J4 N N8 m - EDataFlow_enum_count = $00000003;; m0 X$ l# F4 B3 j7 \1 t
' Q g; g; e w% ~( C- type
8 @. ?2 f4 i, N8 ]. H! R - ERole = TOleEnum;
/ K" d9 n! t) p/ t8 T - const
& i) d5 H: n+ m2 W$ H - eConsole = $00000000;
) L x: L8 h3 Y0 S - eMultimedia = $00000001;% U5 d$ D X" _* S) W1 k# L% _' }
- eCommunications = $00000002;% i4 A7 r5 J# X) D# I! O
- ERole_enum_count = $00000003;- _( }/ E! _. y1 o" a# b1 D1 S
- 6 F- |! B Z* e0 Q+ C+ ?$ Y
- type
+ l: q: J3 D/ J! ]/ m. Z5 Y - IAudioEndpointVolumeCallback = interface(IUnknown)2 e3 G: Y% x+ ~! M% W, c& K3 `7 B( |
- ['{657804FA-D6AD-4496-8A60-352752AF4F89}']; c- W. \1 K& S
- end;9 n. U8 i* F; u N7 Y
! v/ x( N( l) m" h# p2 f6 _1 O- IMMAudioEndpointVolume = interface(IUnknown)
2 c! m9 S9 B- a - ['{5CDF2C82-841E-4546-9722-0CF74078229A}']% d3 m) L; H, i! K5 R2 i
- Function RegisterControlChangeNotify( AudioEndPtVol: IAudioEndpointVolumeCallback): Integer; stdcall;
" w$ s! O1 |1 K2 d, }3 E) N - Function UnregisterControlChangeNotify( AudioEndPtVol: IAudioEndpointVolumeCallback): Integer; stdcall;9 K3 @ M6 i- ~: z% A ]! ~3 I4 }
- Function GetChannelCount(out PInteger): Integer; stdcall;2 ?6 x+ v5 M; V2 g0 m9 ^
- Function SetMasterVolumeLevel(fLevelDB: double; pguidEventContext: TGUID):Integer; stdcall;( j. N2 v1 n3 Y
- Function SetMasterVolumeLevelScalar(fLevelDB: double; pguidEventContext: TGUID):Integer; stdcall;3 ]" E- e& }3 S
- Function GetMasterVolumeLevel(out fLevelDB: double):Integer; stdcall;
! f, U- g0 r1 c7 W' G1 D - Function GetMasterVolumeLevelScaler(out fLevel: double):Integer; stdcall;2 Q3 `1 M6 C0 B% A) l) z& G. j1 S
- Function SetChannelVolumeLevel(nChannel: Integer; fLevelDB: double; pguidEventContext: TGUID):Integer; stdcall;
; r. p. D& X9 A& u+ t1 t$ }+ ` - Function SetChannelVolumeLevelScalar(nChannel: Integer; fLevelDB: double; pguidEventContext: TGUID):Integer; stdcall;% k; a5 f, o h$ n1 p3 g4 F: Q0 a
- Function GetChannelVolumeLevel(nChannel: Integer; out fLevelDB: double) : Integer; stdcall;% C& [6 K% \! J) K5 j z& f- E
- Function GetChannelVolumeLevelScalar(nChannel: Integer; out fLevel: double) : Integer; stdcall;
2 S) a6 Z) }( b6 H; G - Function SetMute(bMute: Boolean ; pguidEventContext: TGUID) :Integer; stdcall;
: @6 U# ^/ y- w3 m2 O - Function GetMute(out bMute: Boolean ) :Integer; stdcall; ?9 u" X7 K e$ l
- Function GetVolumeStepInfo( pnStep: Integer; out pnStepCount: Integer):Integer; stdcall;1 r! t* G% V0 M* ?9 \3 K1 l. q
- Function VolumeStepUp(pguidEventContext: TGUID) :Integer; stdcall;
& _# [! ^5 q% Y4 } - Function VolumeStepDown(pguidEventContext: TGUID) :Integer; stdcall;
& C7 T3 a) n7 F, E0 z/ m: K - Function QueryHardwareSupport(out pdwHardwareSupportMask): Integer; stdcall;, t5 M1 r5 o& @$ w
- Function GetVolumeRange(out pflVolumeMindB: double; out pflVolumeMaxdB: double; out pflVolumeIncrementdB: double): Integer; stdcall;
$ L0 @& I4 z/ F1 y3 h' W0 e - end;
0 Z5 ~3 v1 X' D( D4 D; _4 D
$ x1 r+ u# P; a2 R$ j- { IAudioMeterInformation = interface(IUnknown)! N4 h7 B/ Y% [# P: j
- ['{C02216F6-8C67-4B5B-9D00-D008E73E0064']. b$ j3 t% |& K/ g6 W1 c) W2 y
- end;}
/ X1 D5 z* Q) y+ ` - & s( a, F$ E- s$ Q* O) [- |% w1 {$ D
- IPropertyStore = interface(IUnknown)
* n6 O- x1 Z1 M5 Z - end;
6 a' R0 [/ P5 A2 a - * E0 C* s, g: E4 Q2 M: T6 s
- type$ h, v# ~3 V$ A. u. B
- IMMDevice = interface(IUnknown)
& P, ~/ c$ N5 l- x3 m+ v - ['{D666063F-1587-4E43-81F1-B948E807363F}']
% Q; B. S/ ]2 H; R2 z o" V! Q - Function Activate( refId :TGUID;; V8 `* D- [ v C
- dwClsCtx: DWORD;+ m+ w5 k/ S' Y+ f8 A
- pActivationParams: PInteger ;
0 n7 s% V t$ U% n9 b3 g% U - out pEndpointVolume: IMMAudioEndpointVolume): Hresult; stdCall;8 K9 c- G+ M0 k
- Function OpenPropertyStore(stgmAccess: DWORD; out ppProperties :IPropertyStore): Hresult; stdcall;9 |- r2 D. [3 T' o5 |
- Function GetId(out ppstrId: PLPWSTR ): Hresult; stdcall;7 o- ? R5 v7 W! B
- Function GetState(out State :Integer): Hresult; stdcall;
$ P8 S% N( ]; e6 t - + G; V0 }" H' ?7 M
- end;
7 _* n3 Q5 Y5 L. J0 q! ]5 ]$ [ - / ]8 i6 g0 ^# A. ]# g9 j
% c: X" p5 J! h4 t: w- IMMDeviceCollection = interface(IUnknown)
( B/ X- G) m' E" }7 ` - ['{0BD7A1BE-7A1A-44DB-8397-CC5392387B5E}']/ R2 o6 G$ O: {
- end;
! P+ r# d3 d q
* G+ g% Q$ K( j# z/ M# K( Z) ?2 v- IMMNotificationClient = interface (IUnknown)5 u- d% b! P+ e; Z5 K2 a
- ['{7991EEC9-7E89-4D85-8390-6C703CEC60C0}']4 t7 b7 o4 j, a) H
- end;; Q4 A# ~0 W0 i& {
- - K' a6 z; X9 q
- IMMDeviceEnumerator = interface(IUnknown)9 r% R8 V# `" p- t0 @2 U ]
- ['{A95664D2-9614-4F35-A746-DE8DB63617E6}']& y* K1 N" n& q7 [: U
- Function EnumAudioEndpoints( dataFlow: EDataFlow; deviceState: SYSUINT; DevCollection:IMMDeviceCollection ): Hresult ; stdcall;0 x9 Z: Y. G" y- p# m+ i0 p
- Function GetDefaultAudioEndpoint(EDF: SYSUINT; ER: SYSUINT; out Dev :IMMDevice ): Hresult ; stdcall;
9 B: X' P) I* J - Function GetDevice( pwstrId: pointer ; out Dev :IMMDevice) : HResult; stdcall;
: c2 `, |5 G. s' n$ J9 N - Function RegisterEndpointNotificationCallback(pClient :IMMNotificationClient) :Hresult; stdcall;
' G# t5 s/ u$ \1 t& V - end;8 k+ m" `7 C" p: |
- $ M2 `1 D6 @* Z0 u6 [( K& Y0 j7 Z6 Z
- implementation1 Z# s2 k! Z3 M5 K& E! @$ z
- end." _. h1 e# s1 g3 ^' I
1 X/ T& ?- c0 `) q- Thanks & Reagrds,
2 D( S6 F: w) |, {' R/ f4 U) a# N - Mukta ...
8 ?4 o! p/ _& y9 T7 o4 J6 g! @* X9 p
复制代码- 4 ]- H+ Y3 N r
- it's work in Delphi 7
( c5 q" o6 W @8 a+ A/ t, Z - //////////////////////////
8 A( {; _0 i% m4 X8 K - . T+ g1 G5 b2 _, m3 d* {, u& [% d
- unit MMDevApi;7 i9 l& B, Z% \. v, t
- ; i7 M; R& V4 x0 b
- interface
' n4 I+ `4 H5 }* G7 J; ] - 6 b( [9 D1 A& M4 Y, j" @5 q# @
- uses! x, W# n+ E" ]' M+ T; d! t# k- J
- Windows, ActiveX, ComObj;
2 a0 v. ^7 P1 {+ Q T/ `5 D
$ e& _* K( i6 t) z7 c7 I2 \8 }& K" R- const
; n' h8 s" Z, I - CLASS_IMMDeviceEnumerator : TGUID = '{BCDE0395-E52F-467C-8E3D-C4579291692E}';% c0 S+ a& t, O
- IID_IMMDeviceEnumerator : TGUID = '{A95664D2-9614-4F35-A746-DE8DB63617E6}';
; u! V# ?9 u* W' l, R - IID_IMMDevice : TGUID = '{D666063F-1587-4E43-81F1-B948E807363F}';
+ k% _4 a% P8 Y+ r; Z M" n V2 x - IID_IMMDeviceCollection : TGUID = '{0BD7A1BE-7A1A-44DB-8397-CC5392387B5E}';
! i; ]5 p7 Y. q/ n: ~, t. _/ a - IID_IAudioEndpointVolume : TGUID = '{5CDF2C82-841E-4546-9722-0CF74078229A}';
+ v m$ {2 ~ r. ~* L - IID_IAudioMeterInformation : TGUID = '{C02216F6-8C67-4B5B-9D00-D008E73E0064}';
1 N' i5 }7 Q+ ]$ j6 ]+ b - IID_IAudioEndpointVolumeCallback : TGUID = '{657804FA-D6AD-4496-8A60-352752AF4F89}';! u% l% R+ W5 X+ `
- ) q/ v) ?9 N/ g2 B' E1 `0 \: q# z
- DEVICE_STATE_ACTIVE = $00000001;
8 ~+ @5 ]) L" N$ U8 @: p- u7 [ - DEVICE_STATE_UNPLUGGED = $00000002;
8 [) P. v/ K% f5 t: C* M- O - DEVICE_STATE_NOTPRESENT = $00000004;
l" w' P# V# r, r/ T! i - DEVICE_STATEMASK_ALL = $00000007;
1 F: }. f& u. ]
" p; t0 z. u5 O6 b1 z- type
3 w' v6 F- j. } j - EDataFlow = TOleEnum;
8 ?; G( F: Y2 L% h) \4 S - - k; B7 r' U. ?. {/ P6 S; u5 p+ m
- const- x) F5 B" U2 z9 h# [' h
- eRender = $00000000;
: A* Y) {+ R0 T- u - eCapture = $00000001;2 S! Y- ^0 L. f) f+ d
- eAll = $00000002;
. ~6 Y2 O1 j( X# R- }" r - EDataFlow_enum_count = $00000003;% c0 q) |3 o+ y& q% j
- ' k- v; o% m' P, v0 f$ O2 Z
- type
; P* y; z# X- h1 {+ u - ERole = TOleEnum;
# H& x: p- q$ K+ W0 S- W' ~, z
, n" ?( `$ e' @3 q# u- const1 S* f- k2 F- j' N: T
- eConsole = $00000000;9 t9 s3 ~$ R+ x
- eMultimedia = $00000001;' T; {2 {6 Z+ E( F) ~# B2 p! Q x" y
- eCommunications = $00000002;
! n+ k8 D6 F o5 {: } - ERole_enum_count = $00000003;! Q4 q% T4 S I9 ~2 o) \
! t9 ?6 k5 v# Y8 ]! a- v4 I- type
6 h% A7 @/ p5 K1 x% @: r4 m; h - IAudioEndpointVolumeCallback = interface(IUnknown)
6 c5 b5 H: _; a A/ z+ T! E2 n/ t - ['{657804FA-D6AD-4496-8A60-352752AF4F89}']
2 I$ O( [/ Y. S+ R! h0 }- p" V- m, C - end;
) t+ w, {) Z3 N" k1 E b% N - ; G0 b& t) _) R8 H+ ^2 a
- IAudioEndpointVolume = interface(IUnknown)+ b( S7 Y% K. H7 U; G% R
- ['{5CDF2C82-841E-4546-9722-0CF74078229A}']" F1 B3 W d0 c! d0 r( t/ ~- x( t
- function RegisterControlChangeNotify(AudioEndPtVol: IAudioEndpointVolumeCallback): Integer; stdcall;2 l, E1 ^' t% _, Z) Z
- function UnregisterControlChangeNotify(AudioEndPtVol: IAudioEndpointVolumeCallback): Integer; stdcall;
- O9 f! T+ M& [2 Q% f$ H - function GetChannelCount(out PInteger): Integer; stdcall;
/ l4 t1 [( B( ? - function SetMasterVolumeLevel(fLevelDB: single; pguidEventContext: PGUID): Integer; stdcall;
* P8 f' X0 ~. L, r - function SetMasterVolumeLevelScalar(fLevelDB: single; pguidEventContext: PGUID): Integer; stdcall;9 ?* F6 P( P( ?8 }- t
- function GetMasterVolumeLevel(out fLevelDB: single): Integer; stdcall;0 C8 S3 H R5 h
- function GetMasterVolumeLevelScaler(out fLevelDB: single): Integer; stdcall;/ W" f S! U- S. G
- function SetChannelVolumeLevel(nChannel: Integer; fLevelDB: double; pguidEventContext: PGUID): Integer; stdcall;
7 I6 l5 I$ P% [* |. M6 ]8 }7 w/ r - function SetChannelVolumeLevelScalar(nChannel: Integer; fLevelDB: double; pguidEventContext: PGUID): Integer; stdcall;2 l% U7 _- B6 r# [
- function GetChannelVolumeLevel(nChannel: Integer; out fLevelDB: double): Integer; stdcall;
0 w4 ~* B& t# i) r0 z! | - function GetChannelVolumeLevelScalar(nChannel: Integer; out fLevel: double): Integer; stdcall;
7 x$ ^2 }* F, b$ ^: r# Z6 x - function SetMute(bMute: Boolean; pguidEventContext: PGUID): Integer; stdcall;2 x. j* J( | R2 [
- function GetMute(out bMute: Boolean): Integer; stdcall;
( R# ~( M% S& |8 m2 ]5 E9 `0 M - function GetVolumeStepInfo(pnStep: Integer; out pnStepCount: Integer): Integer; stdcall;
3 J6 R% [3 P4 C( t3 s- Z8 i - function VolumeStepUp(pguidEventContext: PGUID): Integer; stdcall;3 [9 Z N! c6 ?. _
- function VolumeStepDown(pguidEventContext: PGUID): Integer; stdcall;
; A6 s$ ]) ]: }- g3 c - function QueryHardwareSupport(out pdwHardwareSupportMask): Integer; stdcall;
9 _+ n% V, I* z - function GetVolumeRange(out pflVolumeMindB: double; out pflVolumeMaxdB: double; out pflVolumeIncrementdB: double): Integer; stdcall;
) ]& l/ `& o! Z5 W( n - end;
- C7 h% [( Z, k6 g* w+ b - ' \6 M* ]: i' Y8 R2 n# U" ~: {" O
- IAudioMeterInformation = interface(IUnknown)* \7 H9 N2 P; G* T- e, z
- ['{C02216F6-8C67-4B5B-9D00-D008E73E0064}']
- z+ i' |8 W2 ~% C' m- f0 _ - end;. T! } Z( c$ q Q5 {) k# t
, H% U# s# U- B" X- IPropertyStore = interface(IUnknown)8 u4 b$ y m) `; c
- end;
9 K; {) }; w' [# F% Q1 U1 m - 5 z Z% I* l# X$ r2 S
- IMMDevice = interface(IUnknown)9 H7 f' Q& I4 w) H" D! f
- ['{D666063F-1587-4E43-81F1-B948E807363F}']; p2 ]3 P) P$ }0 s9 o
- function Activate(const refId: TGUID;
) ~1 [. L; K; @- ] - dwClsCtx: DWORD;& h' w$ L- | l( ] d& z+ i( L4 y7 }/ l
- pActivationParams: PInteger;# |& ?9 N2 |3 g1 W" o
- out pEndpointVolume: IAudioEndpointVolume): Hresult; stdCall;
, g1 K+ S! u3 k/ i - function OpenPropertyStore(stgmAccess: DWORD; out ppProperties: IPropertyStore): Hresult; stdcall;
1 G% {1 U" j. n6 u - function GetId(out ppstrId: PLPWSTR): Hresult; stdcall;
9 ~3 p: Q$ O# b8 c" F - function GetState(out State: Integer): Hresult; stdcall;
) Z2 _1 M, j1 r - end;
/ l+ h( d# D# C/ E/ v
- G: o H. i/ e& _
0 r" h0 e2 z! o5 R3 e2 D( ~- IMMDeviceCollection = interface(IUnknown)
! U* _2 e/ N( u - ['{0BD7A1BE-7A1A-44DB-8397-CC5392387B5E}']9 |8 O$ a7 h% }: x! _' b5 H
- end;
& C. H6 b% w D' b% N7 e" L' i - 3 I8 A8 Q9 j) V1 V$ Z/ X& E+ }6 x
- IMMNotificationClient = interface(IUnknown)" ?1 Z) |& d. M
- ['{7991EEC9-7E89-4D85-8390-6C703CEC60C0}']& M$ m! k8 F2 `% t$ H* r
- end;
% U- r: L! e+ ]0 c5 s. x - - `' `: R6 W5 _
- IMMDeviceEnumerator = interface(IUnknown)# m1 T4 l/ |1 o1 N
- ['{A95664D2-9614-4F35-A746-DE8DB63617E6}']
# a1 E* b, @& D. e& i8 { - function EnumAudioEndpoints(dataFlow: EDataFlow; deviceState: SYSUINT; DevCollection: IMMDeviceCollection): Hresult; stdcall;
) `" m2 Z- \, [. [ - function GetDefaultAudioEndpoint(EDF: SYSUINT; ER: SYSUINT; out Dev :IMMDevice ): Hresult; stdcall;
& {/ A4 A4 K N, v' z - function GetDevice(pwstrId: pointer; out Dev: IMMDevice): HResult; stdcall;# \2 |1 M9 j b4 E' k1 ^
- function RegisterEndpointNotificationCallback(pClient: IMMNotificationClient): Hresult; stdcall;2 j' F W' W) z" l* F1 G9 D9 w
- end;: }+ W7 k7 K! x: W
- , H8 Z, B/ \4 ^$ P
- implementation
7 k6 d# N# c' p - + L* F0 @( K" }" y
- end.% X4 B4 J5 Q: p" |# t
- ) @/ ^+ i6 ?9 \% t; I1 m
- ///////////////////////7 O' P7 j$ L. |/ C& s9 G
- simple sample :)
& G' q1 Z% p: [- R4 j6 }7 l - ///////////////////////) P3 G. O, M- u1 m1 S1 H* g
% @9 W/ i1 e) C7 x/ m Z& q0 {- //...... other code
- _* h( Z* C0 C3 `% I2 m- z
W4 @ C& v& C" q! s* e, Y( I$ ^$ ]7 W- uses ... ActiveX, MMDevApi, ...;
! r9 D5 l9 R8 q& r
4 z0 G G' `( k9 l1 v! X- //...... other code5 O2 |& T/ L2 ^
) B$ {, x. b" G1 d- var# H' j6 P( P- L5 o: J
- endpointVolume: IAudioEndpointVolume = nil;( V. V7 x. j1 E" I; L ^. W
- # |& f, G! A* s f6 k
- procedure TForm1.FormCreate(Sender: TObject);
: @* S; ?) o' w- P/ ^0 v - var4 R. r) g! g/ y. K. e5 Q
- deviceEnumerator: IMMDeviceEnumerator;
# h9 h3 [4 t' b1 j* U# Z - defaultDevice: IMMDevice;
3 Z* I+ X) O* ~# I1 u3 S7 |% S - begin, E' R4 p$ P, r: C1 ]# ]) \ Y
- CoCreateInstance(CLASS_IMMDeviceEnumerator, nil, CLSCTX_INPROC_SERVER, IID_IMMDeviceEnumerator, deviceEnumerator);/ x; w, e6 M8 }/ r5 m1 _7 ]
- deviceEnumerator.GetDefaultAudioEndpoint(eRender, eConsole, defaultDevice);: m1 z) v- z# ]+ Y5 `* y
- defaultDevice.Activate(IID_IAudioEndpointVolume, CLSCTX_INPROC_SERVER, nil, endpointVolume);- ^+ o" ?% M% Q" z! I
- end;* d+ S% a j& {! t d4 T
8 O/ t }4 F& V" B, A- procedure TForm1.Button1Click(Sender: TObject);& J5 O! W% s0 t, s1 ^
- var; ], B3 U( P" s* `5 @8 e
- VolumeLevel: Single;
& f3 t, ~5 A1 l# _" M$ e8 R; K: q - begin
& j" [9 j% I4 [( ~, t8 O! B, H5 c) n - if endpointVolume = nil then Exit;6 U4 ^6 a, X5 G$ S
- VolumeLevel := 0.50;& i6 _) e% v3 ^2 E0 e* }5 D
- endpointVolume.SetMasterVolumeLevelScalar(VolumeLevel, nil);
0 d, D& P- E" n( S& X - Caption := Format('%1.8f', [VolumeLevel])
% O; s7 a8 l! q/ s" g - end;
' Y* C3 l% o2 Y - 1 e; V- p, A$ {4 E' W6 c) K# v
- ///////////////////////////////////// h' P+ M1 E$ T7 l* E
- / R, w' X8 I6 [# m. R5 r
- // with best regards ToxicDream2 Q/ T U' u: k' P) i4 L
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