interface
uses Messages, Windows, SysUtils, Forms;
function OpenMonitor(Left, Top, Width, Height: Integer; Handle: HWND): Boolean;
function CloseMonitor(): Boolean;
function Capture(FileName: String): Boolean;
function BeginRecord(FileName: String): Boolean;
function EndRecord(): Boolean;
implementation
var
hWndC : THandle;
const WM_CAP_START = WM_USER;
const WM_CAP_STOP = WM_CAP_START + 68;
const WM_CAP_DRIVER_CONNECT = WM_CAP_START + 10;
const WM_CAP_DRIVER_DISCONNECT = WM_CAP_START + 11;
const WM_CAP_SAVEDIB = WM_CAP_START + 25;
const WM_CAP_GRAB_FRAME = WM_CAP_START + 60;
const WM_CAP_SEQUENCE = WM_CAP_START + 62;
const WM_CAP_FILE_SET_CAPTURE_FILEA = WM_CAP_START + 20;
const WM_CAP_SEQUENCE_NOFILE =WM_CAP_START+ 63;
const WM_CAP_SET_OVERLAY =WM_CAP_START+ 51;
const WM_CAP_SET_PREVIEW =WM_CAP_START+ 50;
const WM_CAP_SET_CALLBACK_VIDEOSTREAM = WM_CAP_START +6;
const WM_CAP_SET_CALLBACK_ERROR=WM_CAP_START +2;
const WM_CAP_SET_CALLBACK_STATUSA= WM_CAP_START +3;
const WM_CAP_SET_CALLBACK_FRAME= WM_CAP_START +5;
const WM_CAP_SET_SCALE=WM_CAP_START+ 53;
const WM_CAP_SET_PREVIEWRATE=WM_CAP_START+ 52;
function capCreateCaptureWindowA(lpszWindowName : PCHAR; dwStyle : longint;x : integer;y : integer;nWidth : integer; nHeight : integer;ParentWin : HWND;nId : integer): HWND; STDCALL EXTERNAL
'AVICAP32.DLL';
//打開
function OpenMonitor(Left, Top, Width, Height: Integer; Handle: HWND): Boolean;
begin
Result := False;
try
hWndC := capCreateCaptureWindowA('My Own Capture Window',
WS_CHILD or WS_VISIBLE ,
Left,
Top,
Width,
Height,
Handle,
0);
hWndC := capCreateCaptureWindowA('My Own Capture Window',
WS_CHILD or WS_VISIBLE ,
Left,
Top,
Width,
Height,
Handle,0);
if hWndC <> 0 then
begin
SendMessage(hWndC, WM_CAP_SET_CALLBACK_VIDEOSTREAM, 0, 0);
SendMessage(hWndC, WM_CAP_SET_CALLBACK_ERROR, 0, 0);
SendMessage(hWndC, WM_CAP_SET_CALLBACK_STATUSA, 0, 0);
SendMessage(hWndC, WM_CAP_DRIVER_CONNECT, 0, 0);
SendMessage(hWndC, WM_CAP_SET_SCALE, 1, 0);
SendMessage(hWndC, WM_CAP_SET_PREVIEWRATE, 66, 0);
SendMessage(hWndC, WM_CAP_SET_OVERLAY, 1, 0);
SendMessage(hWndC, WM_CAP_SET_PREVIEW, 1, 0);
Result := True;
end;
except
on E: Exception do
begin
MessageBox(Application.Handle, PChar(E.Message), '錯誤', MB_OK OR MB_ICONERROR);
Result := False;
end;
end;
end;
//關閉
function CloseMonitor(): Boolean;
begin
Result := False;
try
if hWndC <> 0 then
begin
SendMessage(hWndC, WM_CAP_DRIVER_DISCONNECT, 0, 0);
hWndC := 0;
Result := True;
end;
except
on E: Exception do
begin
MessageBox(Application.Handle, PChar(E.Message), '錯誤', MB_OK OR MB_ICONERROR);
Result := False;
end;
end;
end;
//截圖
function Capture(FileName: String): Boolean;
begin
Result := False;
if hWndC <> 0 then
begin
SendMessage(hWndC, WM_CAP_SAVEDIB, 0, longint(pchar(FileName)));
Result := True;
end;
end;
//開始錄制
function BeginRecord(FileName: String): Boolean;
begin
Result := False;
try
if hWndC <> 0 then
begin
SendMessage(hWndC,WM_CAP_FILE_SET_CAPTURE_FILEA,0, Longint(pchar(FileName)));
SendMessage(hWndC, WM_CAP_SEQUENCE, 0, 0);
Result := True;
end;
except
on E: Exception do
begin
MessageBox(Application.Handle, PChar(E.Message), '錯誤', MB_OK OR MB_ICONERROR);
Result := False;
end;
end;
end;
//結束錄制
function EndRecord(): Boolean;
begin
Result := False;
if hWndC <> 0 then
begin
SendMessage(hWndC, WM_CAP_STOP, 0, 0);
Result := True;
end;
end;
end.