gii_expose_event(3) GGI gii_expose_event(3)NAME
gii_expose_event - LibGII expose events
SYNOPSIS
#include <ggi/events.h>
typedef struct gii_expose_event {
COMMON_DATA;
uint32_t x,y;
uint32_t h,w;
} gii_expose_event;
DESCRIPTION
If an application loses the focus and is not physically displayed (e.g. console switching, iconifying), it may be stopped. Some targets may
implement a backbuffer and allow continuing, though.
After reactivation, the application will receive a redraw event, evExpose.
GENERATED EVENTS
The gii_expose_event is used for the evExpose event.
STRUCTURE MEMBERS
The fields describe the region which needs to be redrawn.
EXAMPLES
evExpose handling skeleton:
ggi_visual_t vis;
ggi_event ev;
/* ... wait and get the event... */
if (ev.any.type == evExpose) {
/* We might not be able to render partially ... */
render_screen(vis);
/* but flush only the region needed */
ggiFlushRegion(vis, ev.expose.x, ev.expose.y,
ev.expose.w, ev.expose.h);
}
/* ... etc ... */
SEE ALSO gii_event(3)libgii-1.0.x 2006-12-30 gii_expose_event(3)
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gii_cmd_event(3) GGI gii_cmd_event(3)NAME
gii_cmd_event, gii_cmd_nodata_event - LibGII commands and information events
SYNOPSIS
#include <ggi/events.h>
typedef struct {
COMMON_DATA;
uint32_t code;
} gii_cmd_nodata_event;
#define GII_CMD_DATA_MAX (248-sizeof(gii_cmd_nodata_event))
typedef struct gii_cmd_event {
COMMON_DATA;
uint32_t code;
uint8_t data[GII_CMD_DATA_MAX];
} gii_cmd_event;
DESCRIPTION
These are used internally either to the application or the kernel. The same event is used for both Command and Information events.
GENERATED EVENTS
gii_cmd_event is the basic structure for evCommand and evInformation events. It may need to be casted to some other structure (depending
on code) to access the data.
STRUCTURE MEMBERS
code The command or request code.
data Provides raw access to the device and/or command specific data. The recipient must not store references to the data. If the data
information is needed afterwards, copy it!
DEVICE INFORMATION
One use of evCommand is to convey some capabilities of a GII device, via the GII_CMDCODE_GETDEVINFO command code.
SEE ALSO gii_event(3), gii_cmddata_getdevinfo(3)libgii-1.0.x 2006-12-30 gii_cmd_event(3)
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