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type devmode from structure string dmdevicename integer dmspecversion integer dmdriverversion integer dmsize

integer dmdriverextra long dmfields

integer dmorientation integer dmpapersize integer dmpaperlength integer dmpaperwidth integer dmscale integer dmcopies

integer dmdefaultsource integer dmprintquantity integer dmcolor integer dmduplex

integer dmyresolution integer dmttoption integer dmcollate string dmformname

integer dmunusedpadding long dmbitsperpel long dmpelswidth long dmpelsheight long dmdisplayflags

long dmdisplayfrequency end type

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Function long EnumDisplaySettings (long lpszDeviceName, long iModeNum , lpDevMode As DevMode) Library \\

Function long ChangeDisplaySettings (DevMode lpDevMode , long dwflags) Library \

Function long ExitWindowsEx (long uFlags , long dwReserved ) Library \¶¨ÒåʵÀý±äÁ¿£º

Constant long EWX_REBOOT = 2// ×¢ÊÍ£º ÖØ¿ª»ú Constant long CCDEVICENAME = 32 Constant long CCFORMNAME = 32

Constant long DM_BITSPERPEL = 262144

Constant long DISP_CHANGE_SUCCESSFUL = 0 Constant long DISP_CHANGE_RESTART = 1 Constant long CDS_UPDATEREGISTRY = 1

DevMode DevM ʵÏÖ´úÂ룺

w_example´°¿ÚµÄÃüÁî°´Å¥cb_1.clicked: boolean a long i long b long ans

a = EnumDisplaySettings(0, 0, DevM) //×¢ÊÍ£ºInitial Setting DevM.dmBitsPerPel = 8 //×¢ÊÍ£ºÉ趨³É256É« DevM.dmFields = DM_BITSPERPEL

b = ChangeDisplaySettings(DevM, 0) If b = DISP_CHANGE_RESTART Then

ans = messagebox(\Ìáʾ\ÒªÖØ¿ª»úÉ趨²ÅÄÜÍê³É£¬ÖØ¿ª£¿\question!,yesno!)

If ans = 1 Then

b = ChangeDisplaySettings(DevM, CDS_UPDATEREGISTRY)

ExitWindowsEx(EWX_REBOOT, 0)//Õâ¸öapiº¯ÊýÖ»ÄÜÔÚwin98ÉÏʹÓã¬win ntÒÔÉÏÐë²ÉÓñðµÄ·½·¨ End If Else

If b <> DISP_CHANGE_SUCCESSFUL Then Messagebox(\Ìáʾ\É趨ÓÐÎó\ End If End If

29¡¢²ÊÉ«BMPµµ×ª³É»Ò¶È

½«RGBÏë³É3DÖ®X,Y,ZÖá,ÔòBMPµÄRGBΪ(r,g,b)Óë×ù±ê(Y,Y,Y)¾àÀë×îСʱµÄY¼´Îª»Ò¶ÈÖµ

Y = 0.29900 * R + 0.58700 * G + 0.11400 * B

ÕûÊý»¯

Y = ( 9798*R + 19235*G + 3735*B) / 32768 RGB(Y, Y, Y)¾Í¿ÉÒÔÁË ÊµÏÖ²½Ö裺

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Funcation long GetPixel (long hdc , long x , long Y) Library \Funcation long SetPixelV (long hdc , long x , long Y , long crColor ) Library \

Funcation long GetDC(long handle) library \¶¨ÒåʵÀý±äÁ¿£º picture tmpPic

´°¿Úw_exampleµÄopenʼþ£º

P_1.setredraw(false)// ×¢ÊÍ£ºÉ趨ËùÓÐPixelµÄ¸Ä±ä²»Á¢¼´ÔÚpictureBoxÉÏÏÔʾ

tmpPic = Picture1.Picture

´°¿Úw_exampleµÄcb_1.clicked: long width5, heigh5, rgb5 long hdc5, i , j

long bBlue, bRed, bGreen long y

width5 = unitstopixels(P_1.Width,xunitstopixels!) heigh5 =unitstopixels(P_1.height,yunitstopixels!) hdc5 = getdc(handle(this) For i = 1 To width5 For j = 1 To heigh5

rgb5 = GetPixel(hdc5, i, j) bBlue = Blue(rgb5) bRed = Red(rgb5)

bGreen = Green(rgb5)

Y = (9798 * bRed + 19235 * bGreen + 3735 * bBlue) \\ 32768 rgb5 = RGB(Y, Y, Y)

SetPixelV (hdc5, i, j, rgb5) Next Next

P_1.setredraw(true)// ×¢ÊÍ£º´Ëʱ²ÅÕæÕýÏÔʾPicture End Sub

w_example´°¿Ú¼¶º¯Êý£º

Function long Red(long mlColor )

return wf_and(mlColor,255)//¶Ômlcolor½øÐÐλÓë¼ÆËã Function long Green(long mlColor ) return wf_and((mlColor/256) ,255) Function long Blue(long mlColor)

return wf_and ((mlColor /65536) ,255)

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¶¯»­ÔÚ Windows µ×ÏÂÊÇ .ani ¸ñʽµÄµµ°¸£¬ ÒªÏÔʾ´ËÀàÓα꣬Ê×ÏÈÒªÀûÓÃLoadCursorFromFile API ÔØÈë.ani µµ°¸£¬ È»»òÀûÓà SetSystemCursor API ¼ÓÒÔÏÔʾ¡£ ʵÏÖ²½Ö裺 ¶¨ÒåʵÀý±äÁ¿

Constant long OCR_NORMAL = 32512 Constant long IDC_ARROW = 32512 Íⲿº¯ÊýÒýÓÃÉùÃ÷

Function long LoadCursorFromFile (string lpFileName ) Library \

Function long LoadCursor (ref long hInstance , long lpCursorName) Library \//×¢ÊÍ£º modified

Function long SetSystemCursor (long hcur , long id ) Library \ʵÏÖ´úÂ룺 long hCursor

hCursor = LoadCursorFromFile(\ÓûÏÔʾµÄ .ani »ò .cur µµ°¸Ãû³Æ\SetSystemCursor(hCursor, OCR_NORMAL)

//ÈôÒª½«Êó±êÓα껹ԭԭ״£¬ ÔòÊÇÖ´ÐÐÒÔÏÂÐðÊö£º long ll_temp ll_temp=0

hCursor = LoadCursor(0, IDC_ARROW) SetSystemCursor(hCursor, OCR_NORMAL)

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