This function sets the current map mode and logical coordinate system.
Declaration:
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AT_ERRCOUNT ACCUAPI IG_dspl_mapmode_set(
[IN] HIGEAR hIGear,
[IN] DWORD dwGrpID,
[IN] DWORD dwMapMode,
[IN] const LPAT_RECTANGLE lpViewport,
[IN] const LPAT_RECTANGLE lpWindow
);
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Arguments:
| Name | Type | Description |
| hIGear | HIGEAR | ImageGear handle of image. |
| dwGrpID | DWORD | Identifier of group in which to set map mode options. |
| dwMapMode | DWORD | New value of option MapMode to assign. |
| LpViewport | const LPAT_RECTANGLE | New value of Viewport option to assign. |
| LpWindow | const LPAT_RECTANGLE | New value of Window option to assign. |
Return Value:
Returns the number of ImageGear errors that occurred during this function call.
Supported Raster Image Formats:
All pixel formats supported by ImageGear Professional.
Sample:
Display, MFC, MFC Threads
Example:
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HIGEAR hIGear; /* HIGEAR handle of image */ DWORD nGrpID; /* display group identifier */ DWORD dwMapMode; /* map mode */ AT_RECTANGLE Viewport; /* view port values */ AT_RECTANGLE Window; /* window values */ POINT p; SIZE s; ... /* get current mapping parameters */ dwMapMode = GetMapMode( hDC ); GetViewportOrgEx( hDC, &p ); Viewport.x = p.x; Viewport.y = p.y; GetViewportExtEx( hDC, &s ); Viewport.width = s.cx; Viewport.height = s.cy; GetWindowOrgEx( hDC, &p ); Window.x = p.x; Window.y = p.y; GetWindowExtEx( hDC, &s ); Window.width = s.cx; Window.height = s.cy; IG_dspl_mapmode_set( hIGear, nGrpID, dwMapMode, &Viewport, &Window ); ... |
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Remarks:
ImageGear will perform all calculations with the assumption that the specified logical system is used for the device coordinates.