CPageSetupDialog Class

Bài viết
08/03/2021

Encapsulates the services provided by the Windows common OLE Page Setup dialog box with additional support for setting and modifying print margins.

Syntax

class CPageSetupDialog : public CCommonDialog

Members

Public Constructors

Name	Description
CPageSetupDialog::CPageSetupDialog	Constructs a `CPageSetupDialog` object.

Public Methods

Name	Description
CPageSetupDialog::CreatePrinterDC	Creates a device context for printing.
CPageSetupDialog::DoModal	Displays the dialog box and allows the user make a selection.
CPageSetupDialog::GetDeviceName	Returns the device name of the printer.
CPageSetupDialog::GetDevMode	Returns the current DEVMODE of the printer.
CPageSetupDialog::GetDriverName	Returns the driver used by the printer.
CPageSetupDialog::GetMargins	Returns the current margin settings of the printer.
CPageSetupDialog::GetPaperSize	Returns the paper size of the printer.
CPageSetupDialog::GetPortName	Returns the output port name.
CPageSetupDialog::OnDrawPage	Called by the framework to render a screen image of a printed page.
CPageSetupDialog::PreDrawPage	Called by the framework before rendering a screen image of a printed page.

Public Data Members

Name	Description
CPageSetupDialog::m_psd	A structure used to customize a `CPageSetupDialog` object.

Remarks

This class is designed to take the place of the Print Setup dialog box.

To use a CPageSetupDialog object, first create the object using the CPageSetupDialog constructor. Once the dialog box has been constructed, you can set or modify any values in the m_psd data member to initialize the values of the dialog box's controls. The m_psd structure is of type PAGESETUPDLG.

After initializing the dialog box controls, call the DoModal member function to display the dialog box and allow the user to select print options. DoModal returns whether the user selected the OK (IDOK) or Cancel (IDCANCEL) button.

If DoModal returns IDOK, you can use several of CPageSetupDialog's member functions, or access the m_psd data member, to retrieve information input by the user.

Note

After the common OLE Page Setup dialog box is dismissed, any changes made by the user will not be saved by the framework. It is up to the application itself to save any values from this dialog box to a permanent location, such as member of the application's document or application class.

Inheritance Hierarchy

CPageSetupDialog

Requirements

Header: afxdlgs.h

CPageSetupDialog::CPageSetupDialog

Call this function to construct a CPageSetupDialog object.

CPageSetupDialog(
    DWORD dwFlags = PSD_MARGINS | PSD_INWININIINTLMEASURE,
    CWnd* pParentWnd = NULL);

Parameters

dwFlags
One or more flags you can use to customize the settings of the dialog box. The values can be combined using the bitwise-OR operator. These values have the following meanings:

PSD_DEFAULTMINMARGINS Sets the minimum allowable widths for the page margins to be the same as the printer's minimums. This flag is ignored if the PSD_MARGINS and PSD_MINMARGINS flags are also specified.
PSD_INWININIINTLMEASURE Not implemented.
PSD_MINMARGINS Causes the system to use the values specified in the rtMinMargin member as the minimum allowable widths for the left, top, right, and bottom margins. The system prevents the user from entering a width that is less than the specified minimum. If PSD_MINMARGINS is not specified, the system sets the minimum allowable widths to those allowed by the printer.
PSD_MARGINS Activates the margin control area.
PSD_INTHOUSANDTHSOFINCHES Causes the units of the dialog box to be measured in 1/1000 of an inch.
PSD_INHUNDREDTHSOFMILLIMETERS Causes the units of the dialog box to be measured in 1/100 of a millimeter.
PSD_DISABLEMARGINS Disables the margin dialog box controls.
PSD_DISABLEPRINTER Disables the Printer button.
PSD_NOWARNING Prevents the warning message from being displayed when there is no default printer.
PSD_DISABLEORIENTATION Disables the page orientation dialog control.
PSD_RETURNDEFAULT Causes CPageSetupDialog to return DEVMODE and DEVNAMES structures that are initialized for the system default printer without displaying a dialog box. It is assumed that both hDevNames and hDevMode are NULL; otherwise, the function returns an error. If the system default printer is supported by an old printer driver (earlier than Windows version 3.0), only hDevNames is returned; hDevMode is NULL.
PSD_DISABLEPAPER Disables the paper selection control.
PSD_SHOWHELP Causes the dialog box to show the Help button. The hwndOwner member must not be NULL if this flag is specified.
PSD_ENABLEPAGESETUPHOOK Enables the hook function specified in lpfnSetupHook.
PSD_ENABLEPAGESETUPTEMPLATE Causes the operating system to create the dialog box by using the dialog template box identified by hInstance and lpSetupTemplateName.
PSD_ENABLEPAGESETUPTEMPLATEHANDLE Indicates that hInstance identifies a data block that contains a preloaded dialog box template. The system ignores lpSetupTemplateName if this flag is specified.
PSD_ENABLEPAGEPAINTHOOK Enables the hook function specified in lpfnPagePaintHook.
PSD_DISABLEPAGEPAINTING Disables the draw area of the dialog box.

pParentWnd
Pointer to the dialog box's parent or owner.

Remarks

Use the DoModal function to display the dialog box.

Example

void CMyRichEditView::OnPageSetupDlg()
{
   CPageSetupDialog psd(PSD_INTHOUSANDTHSOFINCHES | PSD_MARGINS |
      PSD_ENABLEPAGEPAINTHOOK, this);

   // Initialize margins
   psd.m_psd.rtMargin.top = 1000;
   psd.m_psd.rtMargin.left = 1250;
   psd.m_psd.rtMargin.right = 1250;
   psd.m_psd.rtMargin.bottom = 1000;
   psd.m_psd.lpfnPagePaintHook = (LPPAGEPAINTHOOK)PaintHook;

   if (IDOK == psd.DoModal())
   {
      // Propagate changes to the app
      AfxGetApp()->SelectPrinter(psd.m_psd.hDevNames, psd.m_psd.hDevMode);
   }
   else
   {
      TRACE(_T("CommDlgExtendedError returned error %d from ")
         _T("CPageSetupDialog::DoModal().\n"),
         (int)CommDlgExtendedError());
   }
}

CPageSetupDialog::CreatePrinterDC

Creates a printer device context from the DEVMODE and DEVNAMES structures.

HDC CreatePrinterDC();

Return Value

Handle to the newly created printer device context (DC).

CPageSetupDialog::DoModal

Call this function to display the Windows common OLE Page Setup dialog box and allow the user to select various print setup options such as the printing margins, size and orientation of the paper, and destination printer.

virtual INT_PTR DoModal();

Return Value

IDOK or IDCANCEL. If IDCANCEL is returned, call the Windows CommDlgExtendedError function to determine whether an error occurred.

IDOK and IDCANCEL are constants that indicate whether the user selected the OK or Cancel button.

Remarks

In addition, the user can access the printer setup options such as network location and properties specific to the selected printer.

If you want to initialize the various Page Setup dialog options by setting members of the m_psd structure, you should do so before calling DoModal, and after the dialog object is constructed. After calling DoModal, call other member functions to retrieve the settings or information input by the user into the dialog box.

If you want to propagate the current settings entered by the user, make a call to CWinApp::SelectPrinter. This function takes the information from the CPageSetupDialog object and initializes and selects a new printer DC with the proper attributes.

AfxGetApp()->SelectPrinter(psd.m_psd.hDevNames, psd.m_psd.hDevMode);

Example

See the example for CPageSetupDialog::CPageSetupDialog.

CPageSetupDialog::GetDeviceName

Call this function after DoModal to retrieve the name of the currently selected printer.

CString GetDeviceName() const;

Return Value

The device name used by the CPageSetupDialog object.

CPageSetupDialog::GetDevMode

Call this function after calling DoModal to retrieve information about the printer device context of the CPageSetupDialog object.

LPDEVMODE GetDevMode() const;

Return Value

The DEVMODE data structure, which contains information about the device initialization and environment of a print driver. You must unlock the memory taken by this structure with the Windows GlobalUnlock function, which is described in the Windows SDK.

CPageSetupDialog::GetDriverName

Call this function after calling DoModal to retrieve the name of the system-defined printer device driver.

CString GetDriverName() const;

Return Value

A CString specifying the system-defined driver name.

Remarks

Use a pointer to the CString object returned by GetDriverName as the value of lpszDriverName in a call to CDC::CreateDC.

CPageSetupDialog::GetMargins

Call this function after a call to DoModal to retrieve the margins of the printer device driver.

void GetMargins(
    LPRECT lpRectMargins,
    LPRECT lpRectMinMargins) const;

Parameters

lpRectMargins
Pointer to a RECT structure or CRect object that describes (in 1/1000 inches or 1/100 mm) the print margins for the currently selected printer. Pass NULL for this parameter, if you are not interested in this rectangle.

lpRectMinMargins
Pointer to a RECT structure or CRect object that describes (in 1/1000 inches or 1/100 mm) the minimum print margins for the currently selected printer. Pass NULL for this parameter, if you are not interested in this rectangle.

CPageSetupDialog::GetPaperSize

Call this function to retrieve the size of the paper selected for printing.

CSize GetPaperSize() const;

Return Value

A CSize object containing the size of the paper (in 1/1000 inches or 1/100 mm) selected for printing.

CPageSetupDialog::GetPortName

Call this function after calling DoModal to retrieve the name of the currently selected printer port.

CString GetPortName() const;

Return Value

The name of the currently selected printer port.

CPageSetupDialog::m_psd

A structure of type PAGESETUPDLG, whose members store the characteristics of the dialog object.

PAGESETUPDLG m_psd;

Remarks

After constructing a CPageSetupDialog object, you can use m_psd to set various aspects of the dialog box before calling the DoModal member function.

If you modify the m_psd data member directly, you will override any default behavior.

For more information on the PAGESETUPDLG structure, see the Windows SDK.

See the example for CPageSetupDialog::CPageSetupDialog.

CPageSetupDialog::OnDrawPage

Called by the framework to draw a screen image of a printed page.

virtual UINT OnDrawPage(
    CDC* pDC,
    UINT nMessage,
    LPRECT lpRect);

Parameters

pDC
Pointer to the printer device context.

nMessage
Specifies a message, indicating the area of the page currently being drawn. Can be one of the following:

WM_PSD_FULLPAGERECT The entire page area.
WM_PSD_MINMARGINRECT Current minimum margins.
WM_PSD_MARGINRECT Current margins.
WM_PSD_GREEKTEXTRECT Contents of the page.
WM_PSD_ENVSTAMPRECT Area reserved for a postage stamp representation.
WM_PSD_YAFULLPAGERECT Area for a return address representation. This area extends to the edges of the sample page area.

lpRect
Pointer to a CRect or RECT object containing the coordinates of the drawing area.

Return Value

Nonzero value if handled; otherwise 0.

Remarks

This image is then displayed as part of the common OLE Page Setup dialog box. The default implementation draws an image of a page of text.

Override this function to customize the drawing of a specific area of the image, or the entire image. You can do this by using a switch statement with case statements checking the value of nMessage. For example, to customize the rendering of the contents of the page image, you could use the following example code:

switch (nMessage)
{
case WM_PSD_GREEKTEXTRECT:
   DrawMyImage(pDC, lpRect);    //draws my special graphic
   return 1;
default:
   return CPageSetupDialog::OnDrawPage(pDC, nMessage, lpRect);
}

Note that you do not need to handle every case of nMessage. You can choose to handle one component of the image, several components of the image, or the whole area.

CPageSetupDialog::PreDrawPage

Called by the framework before drawing the screen image of a printed page.

virtual UINT PreDrawPage(
    WORD wPaper,
    WORD wFlags,
    LPPAGESETUPDLG pPSD);

Parameters

wPaper
Specifies a value that indicates the paper size. This value can be one of the DMPAPER_ values listed in the description of the DEVMODE structure.

wFlags
Indicates the orientation of the paper or envelope, and whether the printer is a dot-matrix or HPPCL (Hewlett Packard Printer Control Language) device. This parameter can have one of the following values:

0x001 Paper in landscape mode (dot matrix)
0x003 Paper in landscape mode (HPPCL)
0x005 Paper in portrait mode (dot matrix)
0x007 Paper in portrait mode (HPPCL)
0x00b Envelope in landscape mode (HPPCL)
0x00d Envelope in portrait mode (dot matrix)
0x019 Envelope in landscape mode (dot matrix)
0x01f Envelope in portrait mode (dot matrix)

pPSD
Pointer to a PAGESETUPDLG structure. For more information on PAGESETUPDLG, see the Windows SDK.

Return Value

Nonzero value if handled; otherwise 0.

Remarks

Override this function to customize the drawing of the image. If you override this function and return TRUE, you must draw the entire image. If you override this function and return FALSE, the entire default image is drawn by the framework.

Chia sẻ qua

CPageSetupDialog Class

Syntax

Members

Public Constructors

Public Methods

Public Data Members

Remarks

Inheritance Hierarchy

Requirements

CPageSetupDialog::CPageSetupDialog

Parameters

Remarks

Example

CPageSetupDialog::CreatePrinterDC

Return Value

CPageSetupDialog::DoModal

Return Value

Remarks

Example

CPageSetupDialog::GetDeviceName

Return Value

CPageSetupDialog::GetDevMode

Return Value

CPageSetupDialog::GetDriverName

Return Value

Remarks

CPageSetupDialog::GetMargins

Parameters

CPageSetupDialog::GetPaperSize

Return Value

CPageSetupDialog::GetPortName

Return Value

CPageSetupDialog::m_psd

Remarks

CPageSetupDialog::OnDrawPage

Parameters

Return Value

Remarks

CPageSetupDialog::PreDrawPage

Parameters

Return Value

Remarks

See also

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