Tasks > Messages

The following message IDs are sent to the parent window as window message WM_PDF_EVENT (= $0400 + 78)

With the VCL component it is possible to use the event OnViewerMessage to trap the events.

MSGPDF_NEEDPASSWORD = 100............. Set a new password!

MSGPDF_PROBLEMONLOAD = 101............. We have a problem while loading the file

MSGPDF_PROBLEMONDISPLAY = 102............. We have a problem while displaying the file

MSGPDF_INITCOMMANDS = 103............. Set the command offsets (lparam)

MSGPDF_CHANGEVIEWPAGE = 104............. Moved to different page (=wparam)

MSGPDF_SETVERSION = 105............. lparam = version * 1000

MSGPDF_INTERNEXCEPTION = 107............. Send exception string

MSGPDF_CHANGESELPAGE = 108............. Moved to different page (=wparam)

MSGPDF_MAPFONT = 109............. Use COMPDF_MAPFONT to change the font

MSGPDF_PRINTSTART = 110............. Param = page count in the printing cue (not the total page count)

MSGPDF_PRINTPAGE = 111............. for each page, LParam = page number in document (see MSGPDF_PRINTPAGEPROGRESS)

MSGPDF_PRINTEND = 112............. done, LParam=0

MSGPDF_PRINTPAGEPROGRESS= 116............. Message to set prograsspar. param=position, max=param of MSGPDF_PRINTSTART

MSGPDF_FIND_START = 113............. Find process started

MSGPDF_FIND_PAGE = 114............. Find process running. The parameter is the current page number

MSGPDF_FIND_END = 115............. Find process started. The parameter is the found page number

MSGPDF_MOVEPages = 140............. The user dragged selected pages - they should now be moved. Use command COMPDF_MovePages

MSGPDF_BEFORE_MOVEPages = 141............. To enable moving the program must set ResultA to 1

//GUI Events

MSGPDF_KEYDOWN = 201............. l Param = Key, SetResult with

MSGPDF_KEYPRESS = 202............. l Param = Key

MSGPDF_KEYUP = 203............. l Param = Key

MSGPDF_DblClick = 204............. Doubleclick

MSGPDF_SetFocus = 205............. Triggered when internally SetFocus is executed

MSGPDF_DrawBackground = 206; // Draw page background - for example to implement skinning

MSGPDF_DRAWOBJECT_GETTEXT= 257; // Get the text for a text draw object. Requires WPViewPDF V4, lparam=current page number