Coordinate Space and Transformation Functions
The following functions are used with coordinate spaces and transformations.
| Function | Description |
|---|---|
| ClientToScreen | Converts the client-area coordinates of a specified point to screen coordinates. |
| CombineTransform | Concatenates two world-space to page-space transformations. |
| DPtoLP | Converts device coordinates into logical coordinates. |
| GetCurrentPositionEx | Retrieves the current position in logical coordinates. |
| GetDisplayAutoRotationPreferences | Gets the orientation preferences of the display. |
| GetGraphicsMode | Retrieves the current graphics mode for the specified device context. |
| GetMapMode | Retrieves the current mapping mode. |
| GetViewportExtEx | Retrieves the x-extent and y-extent of the current viewport for the specified device context. |
| GetViewportOrgEx | Retrieves the x-coordinates and y-coordinates of the viewport origin for the specified device context. |
| GetWindowExtEx | Retrieves the x-extent and y-extent of the window for the specified device context. |
| GetWindowOrgEx | Retrieves the x-coordinates and y-coordinates of the window origin for the specified device context. |
| GetWorldTransform | Retrieves the current world-space to page-space transformation. |
| LPtoDP | Converts logical coordinates into device coordinates. |
| MapWindowPoints | Converts (maps) a set of points from a coordinate space relative to one window to a coordinate space relative to another window. |
| ModifyWorldTransform | Changes the world transformation for a device context using the specified mode. |
| OffsetViewportOrgEx | Modifies the viewport origin for a device context using the specified horizontal and vertical offsets. |
| OffsetWindowOrgEx | Modifies the window origin for a device context using the specified horizontal and vertical offsets. |
| ScaleViewportExtEx | Modifies the viewport for a device context using the ratios formed by the specified multiplicands and divisors. |
| ScaleWindowExtEx | Modifies the window for a device context using the ratios formed by the specified multiplicands and divisors. |
| ScreenToClient | Converts the screen coordinates of a specified point on the screen to client coordinates. |
| SetDisplayAutoRotationPreferences | Sets the orientation preferences of the display. |
| SetGraphicsMode | Sets the graphics mode for the specified device context. |
| SetMapMode | Sets the mapping mode of the specified device context. |
| SetViewportExtEx | Sets the horizontal and vertical extents of the viewport for a device context by using the specified values. |
| SetViewportOrgEx | Specifies which device point maps to the window origin (0,0). |
| SetWindowExtEx | Sets the horizontal and vertical extents of the window for a device context by using the specified values. |
| SetWindowOrgEx | Specifies which window point maps to the viewport origin (0,0). |
| SetWorldTransform | Sets a two-dimensional linear transformation between world space and page space for the specified device context. |