High DPI Display
4/8/2010
Windows Mobile software supports high dots-per-inch (DPI) display. In the previous versions of Windows Mobile software, device drivers that use the GPE returned a hard-coded value of 96 DPI. For devices based on Windows Mobile 2003 and later, the DPI settings are configurable. The following tables show the commonly used DPI settings on new devices.
For Windows Mobile Professional and Windows Mobile Classic devices:
| RESH x RESV | DPI | Orientation |
|---|---|---|
240x320 |
96 |
Portrait & Landscape |
480x640 |
192 |
Portrait & Landscape |
240x240 |
96 |
Square |
480x480 |
192 |
Square |
480x800 |
192 |
Portrait & Landscape |
320x320 |
128 |
Square |
For Windows Mobile Standard devices:
| RESH x RESV | DPI | Orientation |
|---|---|---|
176x220 |
96 |
Portrait |
240x320 |
131 |
Portrait |
320x320 |
131 |
Portrait |
400x240 |
131 |
Portrait |
240x400 |
131 |
Portrait & Landscape |
440x240 |
131 |
Portrait |
To query the DPI settings in Windows Mobile 2003 and later, the device drivers can return the appropriate values in response to a GetDeviceCaps function **.