Use the iprintview interface of Xtreme command bars ActiveX control in VB to draw images

Application scenarios

Printview in Xtreme command bars ActiveX control. You can use APIs to draw arbitrary graphics and text. printview of Xtreme command bars ActiveX control only supports

The Basic Input Source of the two types of input: RTF format and XAML.

Createmarkupprintview creates an iprintview object from the supplied XAML markup string.
Createricheditprintview creates an iprintview object from the supplied RTF string.

Thanks: soyokaze in http://topic.csdn.net/u/20081016/08/e5189330-4fec-4287-9009-47e681723ea3.htmlCode

Who's in http://zj1.51.net/book/show.php? Type = code in vbtip & id = 1099050675

The following code outputs the printview control of the image in the clipboard:

1. Image Input

Public Function copyentirepicture (byref objfrom as object) as Boolean

Dim lhdc as long

Dim lhbmp as long

Dim lhbmpold as long

'Create a DC pointing to the object to be copied in the memory:

Lhdc = createcompatibledc (objfrom. HDC)

If (lhdc <> 0) then

'Create a bitmap pointing to the object to be copied:

Lhbmp = createcompatiblebitmap (objfrom. HDC, objfrom. scalewidth \ screen. twipsperpixelx, objfrom. scaleheight \ screen. twipsperpixely)

If (lhbmp <> 0) then

'Select the bitmap to the DC we just created, and store the old bitmap from there:

Lhbmpold = SelectObject (lhdc, lhbmp)

'Copy the object content to the created bitmap:

Bitblt lhdc, 0, 0, objfrom. scalewidth \ screen. twipsperpixelx, objfrom. scaleheight \ screen. twipsperpixely, objfrom. HDC, 0, 0, srccopy

'Restore the content in the DC:

SelectObject lhdc, lhbmpold

'Load the bitmap to the clipboard now:

Emptyclipboard

Openclipboard 0

Setclipboarddata cf_bitmap, lhbmp

Closeclipboard

'Here we do not need to delete the created bitmap --

'It now belongs to the clipboard. When the clipboard changes, Windows will delete it for us.

End if

'Clear the created DC:

Deleteobject lhdc

End if

End Function

2. image output

Implements iprintview

Option explicit

Private declare function getdibits lib "GDI32 "(_

Byval ahdc as long ,_

Byval hbitmap as long ,_

Byval nstartscan as long ,_

Byval nnumscans as long ,_

Lpbits as any ,_

Lpbi as bitmapinfo ,_

Byval wusage as long )_

As long

Private type bitmapinfoheader '40 bytes

Bisize as long

Biwidth as long

Biheight as long

Biplanes as integer

Bibitcount as integer

Bicompression as long

Bisizeimage as long

Bixpelspermeter as long

Biypelspermeter as long

Biclrused as long

Biclrimportant as long

End type

Private type rgbquad

Rgbblue as byte

Rgbgreen as byte

Rgbred as byte

Rgbreserved as byte

End type

Private type bitmapinfo

Bmiheader as bitmapinfoheader

Bmicolors as rgbquad

End type

Private const bi_rgb = 0 &

Private const bi_rle4 = 2 &

Private const bi_rle8 = 1 &

Private const bi_bitfields = 3 &

Private const dib_rgb_colors = 0

Private declare function stretchdibits lib "GDI32" (byval HDC as long, byval X as long, byval y as long, byval DX as long, byval dy as long, byval srcx as long, byval srcy as long, byval wsrcwidth as long, byval wsrcheight as long, lpbits as any, lpbitsinfo as bitmapinfo, byval wusage as long, byval dwrop as long) as long

Private declare function geticoninfo lib "USER32" (byval hicon as long, piconinfo as iconinfo) as long

Private type iconinfo

Ficon as long

Xhotspot as long

Yhotspot as long

Hbmmask as long

Hbmcolor as long

End type

Private declare function getobjecttype lib "GDI32" (byval hgdiobj as long) as long

Private const obj_bitmap = 7

Private const obj_brush = 2

Private const obj_font = 6

Private const obj_pal = 5

Private const obj_pen = 1

Private declare function GetObject lib "GDI32" alias "getobjecta" (byval hobject as long, byval ncount as long, lpobject as any) as long

Private type bitmap

Bmtype as long

Bmwidth as long

Bmheight as long

Bmwidthbytes as long

Bmplanes as integer

Bmbitspixel as integer

Bmbits as long

End type

Private type size

CX as long

Cy as long

End type

Private const srccopy = & hcc0020 '(DWORD) DEST = Source

Private type rect

Left as long

Top as long

Right as long

Bottom as long

End type

Private const dt_center = & H1

Private const dt_singleline = & H20

Private sub iprintview_beginprinting (byval HDC as long, byval hattribdc as long, byval printinfo as xtremecommandbars. printinfo)

End sub

Private sub iprintview_endprinting (byval HDC as long, byval hattribdc as long, byval printinfo as xtremecommandbars. printinfo)

End sub

Private sub iprintview_preparedc (byval HDC as long, byval hattribdc as long, byval printinfo as xtremecommandbars. printinfo)

End sub

Private sub iprintview_prepareprinting (byval printinfo as xtremecommandbars. printinfo)

Printinfo. maxpage = 1

End sub

Private sub iprintview_printpage (byval HDC as long, byval hattribdc as long, byval printinfo as xtremecommandbars. printinfo)

If (printinfo. currentpage = 1) then

Dim R as rect

R. Left = printinfo. printrectleft

R. Top = printinfo. printrecttop

R. Right = printinfo. printrectright

R. Bottom = printinfo. printrectbottom

Dim mypic as picture 'defines the picture object

Set mypic = clipboard. getdata (vbcfbitmap)

Dim tbmpinfo as bitmapinfo

Dim tsize as size

Dim hbmp as long

Dim bybits () as byte

Dim nbperline as long

Hbmp = mypic. Handle

Call getimagesize (hbmp, tsize)

'Get BMP pixel bit

With tbmpinfo. bmiheader

. Bisize = Len (tbmpinfo. bmiheader)

. Biwidth = tsize. CX

. Biheight = tsize. Cy

. Biplanes = 1

. Bibitcount = 24

. Bicompression = bi_rgb

End

Nbperline = (tsize. CX * 3 + 3) and & hfffffffc

Redim bybits (nbperline-1, tsize. Cy-1) as byte

Call getdibits (HDC, hbmp, 0, tsize. Cy, bybits (0, 0), tbmpinfo, dib_rgb_colors)

Call stretchdibits (HDC, 0, 0, tsize. CX, tsize. cy, 0, 0, tsize. CX, tsize. cy, bybits (0, 0), tbmpinfo, dib_rgb_colors, srccopy)

End if

End sub

Private sub getimagesize (byval hobject as long, tsize as size)

Dim tbmp as bitmap

Dim ticon as iconinfo

If getobjecttype (hobject) = obj_bitmap then

Call GetObject (hobject, lenb (tbmp), tbmp)

Elseif geticoninfo (hobject, ticon) then

Call GetObject (ticon. hbmmask, lenb (tbmp), tbmp)

End if

Tsize. Cx = tbmp. bmwidth

Tsize. Cy = tbmp. bmheight

End sub