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PRINTDLG info  Overview  Group

The PRINTDLG structure contains information that the PrintDlg function uses to initialize the Print common dialog box. After the user closes the dialog box, the system returns information about the user-defined print selections in this structure.

typedef struct tagPD {  // pd 

    DWORD     lStructSize; 

    HWND      hwndOwner; 

    HANDLE    hDevMode; 

    HANDLE    hDevNames; 

    HDC       hDC; 

    DWORD     Flags; 

    WORD      nFromPage; 

    WORD      nToPage; 

    WORD      nMinPage; 

    WORD      nMaxPage; 

    WORD      nCopies; 

    HINSTANCE hInstance; 

    DWORD     lCustData; 

    LPPRINTHOOKPROC lpfnPrintHook; 

    LPSETUPHOOKPROC lpfnSetupHook; 

    LPCTSTR    lpPrintTemplateName; 

    LPCTSTR    lpSetupTemplateName; 

    HANDLE    hPrintTemplate; 

    HANDLE    hSetupTemplate; 

} PRINTDLG; 

 

Members

lStructSize
Specifies the structure size, in bytes.
hwndOwner
Identifies the window that owns the dialog box. This member can be any valid window handle, or it can be NULL if the dialog box has no owner.
hDevMode
Identifies a movable global memory object that contains a DEVMODE structure. Before a call to the PrintDlg function, the structure members may contain data used to initialize the dialog controls. When PrintDlg returns, the structure members specify the state of the dialog box controls.

If you use the structure to initialize the dialog box controls, you must allocate space for and create the DEVMODE structure. (You should allocate a movable block of memory.)

If you do not use the structure to initialize the dialog box controls, hDevMode may be NULL. In this case, PrintDlg allocates memory for the structure, initializes its members, and returns a handle that identifies it.

If the device driver for the specified printer does not support extended device modes, hDevMode is NULL when PrintDlg returns.

If the device name (specified by the dmDeviceName member of the DEVMODE structure) does not appear in the [devices] section of WIN.INI, PrintDlg returns an error.

Because this structure is a movable global memory object, the value of hDevMode may change during the execution of PrintDlg.

For a discussion of how the system resolves a possible data collision between values specified by the hDevMode and hDevNames members, see the following Remarks section.

hDevNames
Identifies a movable global memory object that contains a DEVNAMES structure. This structure contains three strings that specify the driver name, the printer name, and the output port name. Before the call to PrintDlg, the structure members contain strings used to initialize dialog box controls. When PrintDlg returns, the structure members contain the strings typed by the user. The calling application uses these strings to create a device context or an information context.

If you use the structure to initialize the dialog box controls, you must allocate space for and create the DEVNAMES structure. (You should allocate a movable block of global memory.)

If you do not use the structure to initialize the dialog box controls, hDevNames may be NULL. In this case, PrintDlg allocates memory for the structure, initializes its members (by using the printer name specified in the DEVMODE structure), and returns a handle that identifies it. PrintDlg uses the first port name that appears in the [devices] section of WIN.INI when it initializes the members in the DEVNAMES structure. For example, the function uses “LPT1:” as the port name if the following string appears in the [devices] section:

PCL / HP LaserJet=HPPCL,LPT1:,LPT2: 

 

If both hDevMode and hDevNames are NULL, PrintDlg initializes hDevNames using the current default printer.

Because this structure is a movable global memory object, the value of hDevNames may change during the execution of PrintDlg.

For a discussion of how the system resolves a possible data collision between values specified by hDevNames and hDevMode, see the Remarks section later in this topic.

hDC
Identifies a device context or an information context, depending on whether the Flags member specifies the PD_RETURNDC or PC_RETURNIC flag. If neither flag is specified, the value of this member is undefined. If both flags are specified, PD_RETURNDC has priority.
Flags
A set of bit flags that you can use to initialize the Print common dialog box. When the dialog box returns, it sets these flags to indicate the user’s input. This member can be a combination of the following flags:

PD_ALLPAGES

The default flag that indicates that the All radio button is initially selected. This flag is used as a placeholder to indicate that the PD_PAGENUMS and PD_SELECTION flags are not specified.

PD_COLLATE

Places a checkmark in the Collate check box when set on input. When the PrintDlg function returns, this flag indicates that the user selected the Collate option and the printer driver does not support collation. In this case, the application must provide collation. If PrintDlg sets the PD_COLLATE flag on return, the dmCollate member of the DEVMODE structure is undefined.

PD_DISABLEPRINTTOFILE

Disables the Print to File check box.

PD_ENABLEPRINTHOOK

Enables the hook procedure specified in the lpfnPrintHook member. This enables the hook procedure for the Print dialog box.

PD_ENABLEPRINTTEMPLATE

Indicates that the hInstance and lpPrintTemplateName members specify a dialog box template to use in place of the default template for the Print dialog box.

PD_ENABLEPRINTTEMPLATEHANDLE

Indicates that the hPrintTemplate member identifies a data block that contains a preloaded dialog box template. The system uses this template in place of the default template for the Print dialog box. The system ignores the lpPrintTemplateName member if this flag is specified.

PD_ENABLESETUPHOOK

Enables the hook procedure specified in the lpfnSetupHook member. This enables the hook procedure for the Print Setup dialog box.

PD_ENABLESETUPTEMPLATE

Indicates that the hInstance and lpSetupTemplateName members specify a dialog box template to use in place of the default template for the Print Setup dialog box.

PD_ENABLESETUPTEMPLATEHANDLE

Indicates that the hSetupTemplate member identifies a data block that contains a preloaded dialog box template. The system uses this template in place of the default template for the Print Setup dialog box. The system ignores the lpSetupTemplateName member if this flag is specified.

PD_HIDEPRINTTOFILE

Hides the Print to File check box.

PD_NONETWORKBUTTON

Hides and disables the Network button.

PD_NOPAGENUMS

Disables the Pages radio button and the associated edit controls.

PD_NOSELECTION

Disables the Selection radio button.

PD_NOWARNING

Prevents the warning message from being displayed when there is no default printer.

PD_PAGENUMS

Causes the Pages radio button to be in the selected state when the dialog box is created. When PrintDlg returns, this flag is set if the Pages radio button is in the selected state.

PD_PRINTSETUP

Causes the system to display the Print Setup dialog box rather than the Print dialog box.

PD_PRINTTOFILE

Causes the Print to File check box to be checked when the dialog box is created.

When PrintDlg returns, this flag is set if the check box is checked. In this case, the offset indicated by the wOutputOffset member of the DEVNAMES structure contains the string “FILE:”. When you call the StartDoc function to start the printing operation, specify this “FILE:” string in the lpszOutput member of the DOCINFO structure. Specifying this string causes the print subsystem to query the user for the name of the output file.

PD_RETURNDC

Causes PrintDlg to return a device context matching the selections the user made in the dialog box. The device context is returned in hDC.

PD_RETURNDEFAULT

The PrintDlg function does not display the dialog box. Instead, it sets the hDevNames and hDevMode members to handles to DEVMODE and DEVNAMES structures that are initialized for the system default printer. Both hDevNames or hDevMode must be NULL, or PrintDlg 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.

PD_RETURNIC

Similar to the PD_RETURNDC flag, except that this flag returns an information context rather than a device context. If neither PD_RETURNDC nor PD_RETURNIC is specified, hDC is undefined on output.

PD_SELECTION

Causes the Selection radio button to be in the selected state when the dialog box is created. When PrintDlg returns, this flag is specified if the Selection radio button is selected. If neither PD_PAGENUMS nor PD_SELECTION is set, the All radio button is selected.

PD_SHOWHELP

Causes the dialog box to display the Help button. The hwndOwner member must specify the window to receive the HELPMSGSTRING registered messages that the dialog box sends when the user clicks the Help button.

PD_USEDEVMODECOPIES

Same as PD_USEDEVMODECOPIESANDCOLLATE

PD_USEDEVMODECOPIESANDCOLLATE

Disables the Copies edit control if the printer driver does not support multiple copies, and disables the Collate checkbox if the printer driver does not support collation. If this flag is not specified, PrintDlg stores the user selections for the Copies and Collate options in the dmCopies and dmCollate members of the DEVMODE structure.

If this flag isn’t set, the copies and collate information is returned in the DEVMODE structure if the driver supports multiple copies and collation. If the driver doesn’t support multiple copies and collation, the information is returned in the PRINTDLG structure. This means that an application only has to look at nCopies and PD_COLLATE to determine how many copies it needs to render and whether it needs to print them collated.

nFromPage
Specifies the initial value for the starting page edit control. When the PrintDlg function returns, nFromPage specifies the starting page specified by the user. This value is valid only if the PD_PAGENUMS flag is specified.
nToPage
Specifies the initial value for the ending page edit control. When the PrintDlg function returns, nToPage specifies the ending page specified by the user. This value is valid only if the PD_PAGENUMS flag is specified.
nMinPage
Specifies the minimum value for the range of pages specified in the From and To page edit controls.
nMaxPage
Specifies the maximum value for the range of pages specified in the From and To page edit controls.
nCopies
Contains the initial number of copies for the Copies edit control if hDevMode is NULL; otherwise, the dmCopies member of the DEVMODE structure contains the initial value. When PrintDlg returns, this member contains the actual number of copies to print. If the printer driver does not support multiple copies, this value may be greater than one and the application must print all requested copies. If the PD_USEDEVMODECOPIESANDCOLLATE value is set in the Flags member, nCopies is always set to 1 on return and the dmCopies member in the DEVMODE receives the actual number of copies to print.
hInstance
If the PD_ENABLEPRINTTEMPLATE or PD_ENABLESETUPTEMPLATE flag is set in the Flags member, hInstance is the handle of the application or module instance that contains the dialog box template named by the lpPrintTemplateName or lpSetupTemplateName member.
lCustData
Specifies application-defined data that the system passes to the hook procedure identified by the lpfnPrintHook or lpfnSetupHook member. When the system sends the WM_INITDIALOG message to the hook procedure, the message’s lParam parameter is a pointer to the PRINTDLG structure specified when the dialog was created. The hook procedure can use this pointer to get the lCustData value.
lpfnPrintHook
Pointer to a PrintHookProc hook procedure that can process messages intended for the Print dialog box. This member is ignored unless the PD_ENABLEPRINTHOOK flag is set in the Flags member.
lpfnSetupHook
Pointer to a SetupHookProc hook procedure that can process messages intended for the Print Setup dialog box. This member is ignored unless the PD_ENABLESETUPHOOK flag is set in the Flags member.
lpPrintTemplateName
Pointer to a null-terminated string that names a dialog box template resource in the module identified by the hInstance member. This template is substituted for the standard Print dialog box template. This member is ignored unless the PD_ENABLEPRINTTEMPLATE flag is set in the Flags member.
lpSetupTemplateName
Pointer to a null-terminated string that names a dialog box template resource in the module identified by the hInstance member. This template is substituted for the standard Print Setup dialog box template. This member is ignored unless the PD_ENABLESETUPTEMPLATE flag is set in the Flags member.
hPrintTemplate
If the PD_ENABLEPRINTTEMPLATEHANDLE flag is set in the Flags member, hPrintTemplate is the handle of a memory object containing a dialog box template. This template is substituted for the standard Print dialog box template.
hSetupTemplate
If the PD_ENABLESETUPTEMPLATEHANDLE flag is set in the Flags member, hSetupTemplate is the handle of a memory object containing a dialog box template. This template is substituted for the standard Print Setup dialog box template.

Remarks

There might be data collision between the values specified by hDevNames and hDevMode because the wDeviceOffset member of the DEVNAMES structure is supposed to be identical to the dmDeviceName member of the DEVMODE structure. If it is not, the system resolves the data collision by using the value of wDeviceOffset.

If the user checks the Collate check box in the common Print dialog box, but the printer driver does not support collation, the Flags member of the PRINTDLG structure returned by PrintDlg includes the PD_COLLATE flag. In addition, the dmCollate member of the DEVMODE structure identified by the hDevMode member is set to COLLATE_TRUE. If the PD_COLLATE flag is set, the application must simulate collation.

If the PD_USEDEVMODECOPIESANDCOLLATE flag is set, the Collate check box is grayed out if the printer driver does not support collation. This ensures that the user can only select one copy, and nCopies will be one. If the driver does support multiple copies, dmCopies will contain the number of copies, and nCopies will be one.

On entry to PrintDlg, the nCopies member of the PRINTDLG structure specifies the number of copies if PD_USEDEVMODECOPIESANDCOLLATE is not set. On exit from PrintDlg, nCopies contains the number of copies if the printer driver does not support multiple copies. Otherwise it is set to one. If nCopies is greater than one on exit from PrintDlg, the application must print multiple copies of the document.

See Also

CreateDC, CreateIC, PrintDlg, DEVMODE, DEVNAMES, WM_INITDIALOG

See also:


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