VFP打开系统的页面设置，并且返回参数表。
DO decl
LOCAL lcBuffer, lcSource
lcBuffer = GetSetupBuffer()
IF PageSetupDlg (@lcBuffer) <> 0
LOCAL hDevmode, hDevnames
hDevmode = buf2dword(SUBSTR(lcBuffer, 9,4))
hDevnames = buf2dword(SUBSTR(lcBuffer, 13,4))
* creating resulting cursor
CREATE CURSOR csResult (src C(20), name C(50), value C(250))
* retrieving data from three different structures
* returned by this function
= SavePageSetupDlg (lcBuffer)
= SaveDevmode(hDevmode)
= SaveDevnames(hDevnames)
GO TOP
BROW NORMAL NOWAIT
ENDIF
* end of main
FUNCTION GetSetupBuffer
* this function fills and returns the PAGESETUPDLG structure
* in a FoxPro string
*| typedef struct tagPSD {
*| DWORD lStructSize; 0:4
*| HWND hwndOwner; 4:4
*| HGLOBAL hDevMode; 8:4
*| HGLOBAL hDevNames; 12:4
*| DWORD Flags; 16:4
*| POINT ptPaperSize; 20:8
*| RECT rtMinMargin; 28:16
*| RECT rtMargin; 44:16
*| HINSTANCE hInstance; 60:4
*| LPARAM lCustData; 64:4
*| LPPAGESETUPHOOK lpfnPageSetupHook; 68:4
*| LPPAGEPAINTHOOK lpfnPagePaintHook; 72:4
*| LPCTSTR lpPageSetupTemplName; 76:4
*| HGLOBAL hPageSetupTempl; 80:4
*| } PAGESETUPDLG, *LPPAGESETUPDLG; total = 84 bytes
#DEFINE PAGESETUPDLG_SIZE 84
* several Page Setup flags
#DEFINE PSD_RETURNDEFAULT 1024
#DEFINE PSD_INTHOUSANDTHSOFINCHES 4
#DEFINE PSD_INHUNDREDTHSOFMILLIMETERS 8
#DEFINE PSD_ENABLEPAGESETUPTEMPLATE 32768
#DEFINE GWL_HINSTANCE -6
LOCAL lcBuffer, lnFlags
* lnFlags = PSD_RETURNDEFAULT && the dialog not displayed
lnFlags = 0
lcBuffer = num2dword(PAGESETUPDLG_SIZE) ;
num2dword(0) ;
num2dword(0) ;
num2dword(0) ;
num2dword(lnFlags) ;
num2dword(0) num2dword(0) ;
num2dword(0) num2dword(0) num2dword(0) num2dword(0) ;
num2dword(0) num2dword(0) num2dword(0) num2dword(0) ;
num2dword(0) ;
num2dword(0) ;
num2dword(0) ;
num2dword(0) ;
num2dword(0) ;
num2dword(0)
* if you do not care for the page setup flags
* the buffer becomes pretty simple:
* lcBuffer = num2dword(PAGESETUPDLG_SIZE) ;
* Repli(Chr(0), PAGESETUPDLG_SIZE-4)
RETURN lcBuffer
PROCEDURE SavePageSetupDlg (lcBuffer)
* this procedure retrieves and saves parameters from
* the PAGESETUPDLG structure passed as a string
lcSource = "PAGESETUPDLG"
= _save ("Paper width", buf2dword(SUBSTR(lcBuffer, 21,4)))
= _save ("Paper height", buf2dword(SUBSTR(lcBuffer, 25,4)))
= _save ("MinMargin left", buf2dword(SUBSTR(lcBuffer, 29,4)))
= _save ("MinMargin top", buf2dword(SUBSTR(lcBuffer, 33,4)))
= _save ("MinMargin right", buf2dword(SUBSTR(lcBuffer, 37,4)))
= _save ("MinMargin bottom", buf2dword(SUBSTR(lcBuffer, 41,4)))
= _save ("Margin left", buf2dword(SUBSTR(lcBuffer, 45,4)))
= _save ("Margin top", buf2dword(SUBSTR(lcBuffer, 49,4)))
= _save ("Margin right", buf2dword(SUBSTR(lcBuffer, 53,4)))
= _save ("Margin bottom", buf2dword(SUBSTR(lcBuffer, 57,4)))
RETURN
PROCEDURE SaveDevnames (hMem)
* this procedure retrieves and saves parameters from
* the DEVNAMES structure
*|typedef struct tagDEVNAMES {
*| WORD wDriverOffset; 0:2
*| WORD wDeviceOffset; 2:2
*| WORD wOutputOffset; 4:2
*| WORD wDefault; 6:2
*|// Driver, device, and port name strings follow wDefault.
*|} DEVNAMES, *LPDEVNAMES;
LOCAL lnPtr, lcBuffer, wDriverOffset, wDeviceOffset, wOutputOffset, wDefault
* pointer to the first byte of the DEVNAMES memory block
lnPtr = GlobalLock (hMem)
* copying data from the memory block to a string
lcBuffer = Repli(Chr(0), 8)
= Heap2Str (@lcBuffer, lnPtr, 8)
* retrieveing offsets to the names
wDriverOffset = buf2word(SUBSTR(lcBuffer, 1,2))
wDeviceOffset = buf2word(SUBSTR(lcBuffer, 3,2))
wOutputOffset = buf2word(SUBSTR(lcBuffer, 5,2))
wDefault = buf2word(SUBSTR(lcBuffer, 7,2))
lcSource = "DEVNAMES"
= _save ("Device driver name", mem2str(lnPtr wDriverOffset))
= _save ("Device name", mem2str(lnPtr wDeviceOffset))
= _save ("Output port", mem2str(lnPtr wOutputOffset))
= _save ("The printer is default", wDefault)
= GlobalUnlock(hMem)
RETURN
PROCEDURE SaveDevmode (hMem)
* this procedure retrieves and saves parameters from
* the DEVMODE strusture
#DEFINE CCHDEVICENAME 32
#DEFINE CCHFORMNAME 32
*|typedef struct _devicemode {
*| BCHAR dmDeviceName[CCHDEVICENAME]; 0:32
*| WORD dmSpecVersion; 32:2
*| WORD dmDriverVersion; 34:2
*| WORD dmSize; 36:2
*| WORD dmDriverExtra; 38:2
*| DWORD dmFields; 40:4
*| union {
*| struct {
*| short dmOrientation; 44:2
*| short dmPaperSize; 46:2
*| short dmPaperLength; 48:2
*| short dmPaperWidth; 50:2
*| short dmScale; 52:2
*| short dmCopies; 54:2
*| short dmDefaultSource; 56:2
*| short dmPrintQuality; 58:2
*| };
*| POINTL dmPosition; 44:8
*| DWORD dmDisplayOrientation; 44:4
*| DWORD dmDisplayFixedOutput; 44:4
*| };
*| short dmColor; 60:2
*| short dmDuplex; 62:2
*| short dmYResolution; 64:2
*| short dmTTOption; 66:2
*| short dmCollate; 68:2
*| BYTE dmFormName[CCHFORMNAME]; 70:32
*| WORD dmLogPixels; 102:2
*| DWORD dmBitsPerPel; 104:4
*| DWORD dmPelsWidth; 108:4
*| DWORD dmPelsHeight; 112:4
*| union {
*| DWORD dmDisplayFlags; 116:4
*| DWORD dmNup; 116:4
*| }
*| DWORD dmDisplayFrequency; 120:4
*|#if(WINVER >= 0x0400)
*| DWORD dmICMMethod; 124:4
*| DWORD dmICMIntent; 128:4
*| DWORD dmMediaType; 132:4
*| DWORD dmDitherType; 136:4
*| DWORD dmReserved1; 140:4
*| DWORD dmReserved2; 144:4
*|#if (WINVER >= 0x0500) || (_WIN32_WINNT >= 0x0400)
*| DWORD dmPanningWidth; 148:4
*| DWORD dmPanningHeight; 152:4
*|#endif
*|#endif /* WINVER >= 0x0400 */
*|} DEVMODE; total bytes = 156
#DEFINE DEVMODE_STRU_SIZE 156
LOCAL lnPtr, lcBuffer, lcDevicename, lcFormname
* pointer to the first byte of the DEVMODE memory block
lnPtr = GlobalLock (hMem)
lcBuffer = Repli(Chr(0), DEVMODE_STRU_SIZE)
= Heap2Str (@lcBuffer, lnPtr, DEVMODE_STRU_SIZE)
lcDevicename = SUBSTR(lcBuffer, 1,CCHDEVICENAME)
lcFormname = SUBSTR(lcBuffer, 71,CCHFORMNAME)
lcSource = "DEVMODE"
= _save ("Device name", STRTRAN(lcDevicename, Chr(0),""))
= _save ("Form name", STRTRAN(lcFormname, Chr(0),""))
= _save ("Driver version", buf2word(SUBSTR(lcBuffer, 35,2)))
= _save ("DEVMODE structure size", buf2word(SUBSTR(lcBuffer, 37,2)))
= _save ("Orientation", buf2word(SUBSTR(lcBuffer, 45,2)))
= _save ("Paper size", buf2word(SUBSTR(lcBuffer, 47,2)))
= _save ("Paper length", buf2word(SUBSTR(lcBuffer, 49,2)))
= _save ("Paper width", buf2word(SUBSTR(lcBuffer, 51,2)))
= _save ("Scale", buf2word(SUBSTR(lcBuffer, 53,2)))
= _save ("Copies", buf2word(SUBSTR(lcBuffer, 55,2)))
= _save ("Default source", buf2word(SUBSTR(lcBuffer, 57,2)))
= _save ("Print quality", buf2word(SUBSTR(lcBuffer, 59,2)))
= _save ("Y resolution", buf2word(SUBSTR(lcBuffer, 65,2)))
= _save ("Media type", buf2word(SUBSTR(lcBuffer, 133,4)))
= _save ("Ditherting type", buf2word(SUBSTR(lcBuffer, 137,4)))
= GlobalUnlock(hMem)
RETURN
PROCEDURE _save (lcName, lvValue)
LOCAL lcType, lcValue
lcType = TYPE("lvValue")
DO CASE
CASE lcType = "N"
lcValue = LTRIM(STR(lvValue, 20,2))
OTHER
lcValue = lvValue
ENDCASE
INSERT INTO csResult VALUES (lcSource, lcName, lcValue)
RETURN
FUNCTION buf2dword (lcBuffer)
RETURN Asc(SUBSTR(lcBuffer, 1,1)) ;
Asc(SUBSTR(lcBuffer, 2,1)) * 256 ;
Asc(SUBSTR(lcBuffer, 3,1)) * 65536 ;
Asc(SUBSTR(lcBuffer, 4,1)) * 16777216
FUNCTION buf2word (lcBuffer)
RETURN Asc(SUBSTR(lcBuffer, 1,1)) ;
Asc(SUBSTR(lcBuffer, 2,1)) * 256
FUNCTION num2dword (lnValue)
#DEFINE m0 256
#DEFINE m1 65536
#DEFINE m2 16777216
LOCAL b0, b1, b2, b3
b3 = Int(lnValue/m2)
b2 = Int((lnValue - b3*m2)/m1)
b1 = Int((lnValue - b3*m2 - b2*m1)/m0)
b0 = Mod(lnValue, m0)
RETURN Chr(b0) Chr(b1) Chr(b2) Chr(b3)
FUNCTION mem2str(lnMemBlock)
#DEFINE BUFFER_SIZE 16
#DEFINE EMPTY_BUFFER Repli(Chr(0), BUFFER_SIZE)
LOCAL lnPtr, lcResult, lcBuffer, lnPos
lnPtr = lnMemBlock
lcResult = ""
DO WHILE .T.
lcBuffer = EMPTY_BUFFER
= Heap2Str (@lcBuffer, lnPtr, BUFFER_SIZE)
lnPos = AT(Chr(0), lcBuffer)
IF lnPos > 0
lcResult = lcResult SUBSTR(lcBuffer, 1, lnPos-1)
RETURN lcResult
ELSE
lcResult = lcResult lcBuffer
lnPtr = lnPtr BUFFER_SIZE
ENDIF
ENDDO
PROCEDURE decl
#DEFINE GMEM_FIXED 0
DECLARE INTEGER PageSetupDlg IN comdlg32 STRING @lppsd
DECLARE RtlMoveMemory IN kernel32 As Heap2Str STRING @, INTEGER, INTEGER
DECLARE INTEGER GlobalLock IN kernel32 INTEGER hMem
DECLARE INTEGER GlobalUnlock IN kernel32 INTEGER hMem 
