QPx_GetImageFileInfo
| QPx_GetImageFileInfo(imagePath; imagePath; imagePath; imagePath; imagePath; imagePath):error | |||
|---|---|---|---|
 |
imagePath | Text | Full path to image file |
 |
imageWidth | Longint | Image width in pixels |
|
imageHeight | Longint | Image height in pixels |
|
pixelDepth | Longint | Image depth |
|
hRes | Longint | Horizontal image resolution in dots/inch (dpi) |
|
vRes | Longint | Vertical image resolution in dots/inch (dpi) |
|
error | Longint | Error result |
Get the properties of an image file
The imagePath parameter contains the full pathname to the image file. If imagePath is empty, QPix presents a file selection dialog where the user can preview and select an image file. If the user selects a file, its full pathname is returned in imagePath, otherwise error qpx_userCancelErr is returned.
Image dimensions are returned in imageWidth and imageHeight, 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 image info C_LONGINT($error) C_TEXT($imagePath) C_LONGINT($width;$height;$depth;$hRes;$vRes) $imagePath:="Hard disk:images:people.gif" $error:=QPx_GetImageFileInfo ($imagePath;$width;$height;$depth;$hRes;$vRes) If ($error=qpx_noErr) //Work with image info End if
Related commands
| QPx_GetImageFileColorSpace | Get the color space of an image |
| QPx_GetImageFileColorProfile | Get the color profile of an image |