diff options
Diffstat (limited to 'src/gwin/gimage.c')
| -rw-r--r-- | src/gwin/gimage.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/src/gwin/gimage.c b/src/gwin/gimage.c index 953aefc3..fdc6df84 100644 --- a/src/gwin/gimage.c +++ b/src/gwin/gimage.c @@ -140,6 +140,10 @@ GHandle gwinGImageCreate(GDisplay *g, GImageObject *gobj, GWindowInit *pInit) { } bool_t gwinImageOpenGFile(GHandle gh, GFILE *f) { + // is it a valid handle? + if (gh->vmt != (gwinVMT *)&imageVMT) + return FALSE; + if (gdispImageIsOpen(&widget(gh)->image)) gdispImageClose(&widget(gh)->image); @@ -159,6 +163,10 @@ bool_t gwinImageOpenGFile(GHandle gh, GFILE *f) { } gdispImageError gwinImageCache(GHandle gh) { + // is it a valid handle? + if (gh->vmt != (gwinVMT *)&imageVMT) + return GDISP_IMAGE_ERR_BADFORMAT; + return gdispImageCache(&widget(gh)->image); } |