QNX RTOS v4 Knowledge Base
QNX RTOS v4 Knowledge Base
| Title |
Loading a JPG file using PxLoadImage() |
| Ref. No. |
QNX.000009899 |
| Category(ies) |
Development |
| Issue |
We are using the PxLoadImage() function many times to load a JPG file that will be displayed in a widget. However, we found out that the memory is decreased every time the PxLoadImage() function is called.
Is there a way to free up the previous memory before a new image is loaded?
|
| Solution |
The only memory that PxLoadImage() allocates for you is the image's memory, so you can free it.
x09/*free image*/
x09image->flags = Ph_RELEASE_IMAGE | Ph_RELEASE_PALETTE | Ph_RELEASE_TRANSPARENCY_MASK | Ph_RELEASE_GHOST_BITMAP;
x09PhReleaseImage(image);
x09free(image);
PhReleaseImage() frees the members of the image structure that are indicated in image->flags. PxLoadImage() does not set any of the flags, so you have to set the flags yourself before calling PhReleaseImage().
Then, free the image structure. |
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