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diff --git a/html/en/drv/emf.html b/html/en/drv/emf.html new file mode 100644 index 0000000..1f7b462 --- /dev/null +++ b/html/en/drv/emf.html @@ -0,0 +1,84 @@ +<!doctype HTML PUBLIC "-//IETF//DTD HTML//EN"> +<html> + +<head> +<meta http-equiv="Content-Language" content="en-us"> +<meta http-equiv="Content-Type" content="text/html; charset=iso-8859-1"> +<title>CD_EMF</title> +<link rel="stylesheet" type="text/css" href="../../style.css"> +</head> + +<body> + +<h2>CD_EMF - Enhanced Metafile Driver (cdemf.h)</h2> + + <p>This driver allows generating a Microsoft Windows Enhanced Metafile, the + format used by 32-bit Windows systems to store graphics primitives. Usually, + the filename has an extension "*.emf".</p> + <p>The driver works only in the Microsoft Windows platform, but you can use it + in other platforms without the risk of compilation error. If you attempt to + create a canvas in another platform, function <font face="Courier"><strong> + cdCreateCanvas</strong></font> will return NULL.</p> + +<h3>Use</h3> + + <p>The canvas is created by means of a call to function <font face="Courier"> + <a href="../func/init.html#cdCreateCanvas"> + <strong>cdCreateCanvas</strong></a>(CD_EMF, Data)</font>, after which other CD + functions can be called as usual. Parameter <font face="Courier">Data</font> + has the following format:</p> + + <pre><em>"filename widthxheight" </em>or in C <em>"<strong><tt>%s %dx%d</tt></strong>"</em></pre> + + <p>It must include the filename and the canvas' dimensions.<font face="Courier"> + </font>The filename must be inside double quotes (") if it has spaces.<font face="Courier"> + Width</font> and <font face="Courier">height</font> are provided in pixels + (note the lowercase "x" between them). Resolution (the number of pixels per + millimeter) is always the screen resolution.</p> + <p>Any amount of such canvases may exist simultaneously. Function + <font face="Courier"><strong>cdCreateCanvas</strong></font> <b>opens</b> the + file, and a call to function + <a href="../func/init.html#cdKillCanvas"> + <font face="Courier"><strong>cdKillCanvas</strong></font></a> is required to + <b>close</b> the file properly.</p> +<p>To use this driver in Windows using GDI+ is necessary to call +<font face="Courier"><strong> + cdUseContextPlus</strong></font><strong><font face="Courier">(1)</font></strong> +before creating the canvas. If you intend to use <strong>cdCanvasPlay</strong> +to interpret the EMF, then do not use GDI+ to generate the metafile. GDI+ +extensively use internal transformations that will affect the <strong> +cdCanvasPlay</strong> interpretation. Also some interior style will not be +correctly interpreted.</p> + +<h3>Behavior of Functions</h3> + + <p>This driver is greatly platform-dependent. For further detail, see the <b> + Behavior of Functions</b> of the <a href="win32.html">Microsoft Windows (GDI)</a> + or <a href="gdiplus.html">Windows Using GDI+</a> platform base drivers. It has + been noticed that EMF, when saved in the Windows 95 environment, is not + totally compatible with EMF saved in the Windows NT environment.</p> + +<h4>Control Functions</h4> +<ul> + <li><a href="../func/other.html#cdPlay"> + <font face="Courier"><strong>Play</strong></font></a>: different from the + basic driver, is implemented. Not implemented using GDI+.</li> + <li> + <a href="../func/control.html#cdClear"> + <font face="Courier"><strong>Clear</strong></font></a>: different from the + basic driver, does nothing.</li> +</ul> +<h4>Client Images </h4> +<ul> + <li> + <a href="../func/client.html#cdGetImageRGB"> + <font face="Courier"><strong>GetImageRGB</strong></font></a>: does nothing.</li> +</ul> +<h4>Server Images</h4> +<ul> + <li>All functions do nothing.</li> +</ul> + +</body> + +</html> |