QPix Command Reference
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QPx_GetPictureInfo(pictVar; pictWidth; pictHeight; pixelDepth; hRes; vRes):error | |||
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pictVar | Picture | Picture variable |
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pictWidth | Longint | Image width in pixels |
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pictHeight | Longint | Image height in pixels |
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pixelDepth | Longint | Image depth |
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hRes | Longint | Horizontal image resolution in dots per inch (dpi) |
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vRes | Longint | Vertical image resolution in dots per inch (dpi) |
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error | Longint | Error result |
Returns 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:
Black and white images | 1 |
Color images | 2, 8, 16, 24, 32 |
Grayscale images | 34 (2 bit), 36 (4-bit), 40 (8-bit) |
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 |