Insert WMF in RTF

After five days, I want to summarize that I want to support BMP images in RTF. The WordPad does not support/dibitmap and/wbitmap control words, so I chose/wmetafile, Which is WMF. WMF is a vector graph, which contains windows APIs. BMP is actually used to draw BMP. There are several WMF types. I chose the old standard Metafile which consists of two structs: header and recordtypedef struct tagmetaheader {word mttype; Word mtheadersize; Word mtversion; DWORD mtsize; Word mtnoobjects; DWORD mtmaxrecord; Word mtnoparameters;} metaheader, * pmetaheader; typedef struct tagMETARECORD { DWORD rdSize; WORD rdFunction; WORD rdParm[1]; } METARECORD, *PMETARECORD; Http://wvware.sourceforge.net/caolan/ora-wmf.html on the Internet I used word to generate an illustrated RTF document, read the code, and then complete the // Header 0100 -- type 0900 -- header size 0003 -- version 4e000000 -- size 78 0000 -- objects 2a1000000 -- maxrecord 42 0000 // Record 04000000 -- size 0301 -- setmapmode 0800 -- mm_anisotropic05000000 0b02 -- set0000worg 0000 000005000000 0c02 -- setjavaswext 0200 020005000000 0701 -- setstretchbltmode 0400 20172a000000 Effecf -- stretchdibits 2000 -- DWORD dwrop // raster operation code Cc00 -- uint iusage, // usage options -- Const bitmapinfo * lpbitsinfo, // bitmap data -- Const void * lpbits, // bitmap bits 0000 0200 -- int nscheight, // height of source rectangle 0200 -- int nscwidth, // width of source rectangle 0000 -- int ysrc, // y-coord of source upper-left corner 0000 -- int xsrc, // X-coord of source upper-left corner 0200 -- int ndestheight, // height of destination rectangle 0200 -- int ndestwidth, // width of destination rectangle 0000 -- int ydest, // y-coord of destination upper-left corner 0000 -- int xdest, // X-coord of destination upper-left corner -- HDC, // handle to DC BMP info 2800 0000 02000000 02000000 01001800000000001000 0000c40e 0000c40e 00000000 00000000 0000 Effecff0000ff4e000000ff0000ff0000 05000000 0701 0100 000003000000 -- end 0000 the parameter of the function stretchdibits in the middle is not correct. I don't know how it works, however, all the useful parameters can be seen to support BMP, but the image size is always unsatisfactory./picwn/pichn (N equals to the width or height of the image multiplied by 01MM mm per pixel, that is, hmm_per_inch, that is, n = width * 2540/DPI)/picwgoa1/ pichgoal (N equals the image width or height multiplied by twip per pixel, that is, twips_per_inch, that is, n = width/DPI * 20) /picscalex/picscaley this is the adjustment ratio (the next 20 twips are equal to one pixel, which is the unit of RTF) these control tokens related to the image size cannot be controlled. Later, it was found that word would force everything to be changed to 96 DPI and scaled half of the larger image, after all the data is complete, all data will be magnified by 4/3 times except the image. It took me a week to figure it out. If something is wrong, I hope my friend will point it out.