please dont rip this site Prev Next

SetWorldTransform info  Overview  Group

The SetWorldTransform function sets a two-dimensional linear transformation between world space and page space for the specified device context. This transformation can be used to scale, rotate, shear, or translate graphics output.

BOOL SetWorldTransform(

    HDC hdc,

// handle of device context

    CONST XFORM *lpXform 

// address of transformation data

   );

Parameters

hdc
Identifies the device context.
lpXform
Points to an XFORM structure that contains the transformation data.

Return Values

If the function succeeds, the return value is nonzero.

If the function fails, the return value is zero. To get extended error information, call GetLastError.

Remarks

For any coordinates (x, y) in world space, the transformed coordinates in page space (x’, y’) can be determined by the following algorithm:

x' = x * eM11 + y * eM21 + eDx, 

y' = x * eM12 + y * eM22 + eDy, 

 

where the transformation matrix is represented by the following:

| eM11 eM12 0 | 

| eM21 eM22 0 | 

| eDx  eDy  1 | 

 

The mapping mode (defined by the current window and viewport extents origins) serves to define units and scales.

The world transformation is usually used to scale or rotate logical images in a device-independent way.

The default world transformation is the identity matrix with zero offset.

The SetWorldTransform function will fail unless the graphics mode for the given device context has been set to GM_ADVANCED by previously calling the SetGraphicsMode function. Likewise, it will not be possible to reset the graphics mode for the device context to the default GM_COMPATIBLE mode, unless the world transformation has first been reset to the default identity transformation by calling SetWorldTransform or ModifyWorldTransform.

See Also

GetWorldTransform, ModifyWorldTransform, SetGraphicsMode, SetMapMode, SetViewportExtEx, SetViewportOrgEx, SetWindowExtEx, SetWindowOrgEx, XFORM 


file: /Techref/os/win/api/win32/func/src/f84_9.htm, 3KB, , updated: 2000/4/7 11:19, local time: 2024/12/23 15:05,
TOP NEW HELP FIND: 
18.216.208.243:LOG IN

 ©2024 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?
Please DO link to this page! Digg it! / MAKE!

<A HREF="http://massmind.ecomorder.com/Techref/os/win/api/win32/func/src/f84_9.htm"> SetWorldTransform</A>

After you find an appropriate page, you are invited to your to this massmind site! (posts will be visible only to you before review) Just type a nice message (short messages are blocked as spam) in the box and press the Post button. (HTML welcomed, but not the <A tag: Instead, use the link box to link to another page. A tutorial is available Members can login to post directly, become page editors, and be credited for their posts.


Link? Put it here: 
if you want a response, please enter your email address: 
Attn spammers: All posts are reviewed before being made visible to anyone other than the poster.
Did you find what you needed?

 

Welcome to ecomorder.com!

 

Welcome to massmind.ecomorder.com!

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

 

  .