QPx_GetPictureInfo
| QPx_GetPictureInfo(pictVar; pictVar; pictVar; pictVar; pictVar; pictVar):error | |||
|---|---|---|---|
 |
pictVar | Picture | Picture variable |
 |
pictWidth | Longint | Image width in pixels |
|
pictHeight | Longint | Image height in pixels |
|
pixelDepth | Longint | Image depth |
|
hRes | Longint | Horizontal image resolution in dots per inch (dpi) |
|
vRes | Longint | Vertical image resolution in dots per inch (dpi) |
|
error | Longint | Error result |
Get the properties of a 4D picture variable
The source picture is passed in the pictVar parameter.
Image dimensions are returned in pictWidth and pictHeight, horizontal and vertical resolution in hRes and vRes and pixel depth in pixelDepth. Possible values for pixelDepth are:
| qpx_BlackAndWhite | 1 | Black and white |
| qpx_FourColors | 2 | Four colors |
| qpx_SixteenColors | 4 | Sixteen colors |
| qpx_TwoHundredFiftySixColors | 8 | 256 colors |
| qpx_ThousandsColors | 16 | Thousands of colors |
| qpx_MillionColors | 24 | Million of colors |
| qpx_MillionColorsPlusAlpha | 32 | Million of colors plus alpha |
| qpx_FourGrays | 34 | Four grays |
| qpx_SixteenGrays | 36 | Sixteen grays |
| qpx_TwoHundredFiftySixGrays | 40 | 256 grays |
Example
// Get picture info C_LONGINT($error) C_PICTURE($picture) C_LONGINT($width;$height;$depth;$hRes;$vRes) $picture:=[Images]Picture $error:=QPx_GetPictureInfo ($picture;$width;$height;$depth;$hRes;$vRes) If ($error=qpx_noErr) // Work with picture info End if
Related commands
| QPx_GetCompressedPictureInfo | Get information about a compressed picture (legacy or new) |