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Insert a control surface in front of or behind another
int PtInsertSurface( PtWidget_t *widget,
PtSurface_t *surface,
unsigned char brother_id,
int behind );
int PtInsertSurfaceById( PtWidget_t *widget,
unsigned char surface_id,
unsigned char brother_id,
int behind );
ph
These functions change a surface's z coordinate by inserting
the surface in front of or behind another surface.
They differ in how they identify the control surface:
- PtInsertSurface()
- Uses the surface argument, which points to a
PtSurface_t structure that describes the control surface.
This pointer must not be NULL.
- PtInsertSurfaceById()
- Searches the control surfaces belonging to the given widget for the one
with an ID of surface_id.
The widget argument specifies the widget owning the specified
surfaces.
The brother_id argument specifies the numerical ID of the
surface to position relative to, and the behind argument
specifies how to position the surface:
- 0
- The surface is positioned in front of its new brother.
- Nonzero
- The surface is positioned behind.
- 0
- Success.
- -1
- One or both of the specified surfaces couldn't be found.
Photon
Safety: | |
Interrupt handler |
No |
Signal handler |
No |
Thread |
No |
PtSurfaceBrotherBehind(),
PtSurfaceBrotherInFront(),
PtSurfaceInBack(),
PtSurfaceInFront(),
PtSurfaceToBack(),
PtSurfaceToBackById(),
PtSurfaceToFront(),
PtSurfaceToFrontById()
Control Surfaces
chapter of the Photon Programmer's Guide
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