| Title |
Emitting Raw Events |
| Ref. No. |
QNX.000009828 |
| Category(ies) |
Development |
| Issue |
We have a remote touchscreen device. In order to make it work, we have to emit raw PTR and Key event. We couldn't find any information about ph_EV_RAW in the documents. Where can we find relative information?
|
| Solution |
Here is an example how to do this, and in PhT.h are the details on which button is pressed. There is also an example posted in /usr/free/qnx4/photon/contrib/record.tgz that shows how to trap and emit events(draw and pointer). This file is in the free software section of our webpage.
The function 'mousemove' is attached to a button in a PhAB application. 'init_system' must run before the mousemove callback.
/*standard headers*/
#include <stdio.h>
#include <stdlib.h>
#include <unistd.h>
#include <string.h>
/*Toolkit headers*/
#include <Ph.h>
#include <Pt.h>
#include <Ap.h>
/*Local headers*/
#include "abimport.h"
#include "proto.h"
PhRid_t ptr_Rid;
int mousemove(PtWidget_t *widget, ApInfo_t *apinfo, PtCallbackInfo_t *cbinfo){
x09short x = 0, y = 0;
x09int count;
x09int click = 0;
x09
/*eliminate 'unreferenced' warnings*/
x09widget = widget, apinfo = apinfo, cbinfo = cbinfo;
x09init_system(cbinfo->event->input_group);
x09for(count = 0; count < 60; count++){
x09x09printf("x = %d, y = %d, click = %dn", x, y, count);
x09x09MoveMouse(x, y, cbinfo->event->input_group, click);
x09x09x++;
x09x09y++;
/*every 10 moves simulate mouse click*/
x09x09if(!(x%10))
x09x09x09click = Ph_BUTTON_SELECT;
x09x09else
x09x09x09click = 0;
x09x09sleep(1);
x09}
x09return(Pt_CONTINUE);
}
void MoveMouse(short x, short y, int group, int click){
x09PhEvent_t ev;
x09PhRawPtrEvent_t pev;
x09PhRect_t rect = {0,0,0,0};
/*setup event message*/
x09ev.type = Ph_EV_RAW;
x09ev.subtype = Ph_EV_RAW_PTR;
x09ev.flags = Ph_EVENT_INSLUSIVE;
x09ev.data_len = offset(PhRawPtrEvent_t, coord) + sizeof(PhRawPtrCoord_t);
x09ev.num_rects = 1;
x09ev.emitter.rid = ptr_Rid;
x09ev.input_group = group;
/*mouse events will be absolute coords, using 0 for .flags, in case of relative moves(e.g. increase X by x, Y by y) then use Ph_PTR_RAW_FLAG_XY_REL*/
x09if(click){
x09x09pev.button_state = click;
x09x09pev.flags = Ph_PTR_FLAG_Z_NONE;
x09x09pev.raw_flags = Ph_PTR_RAW_FLAG_XY_REL;
x09}else{
x09x09pev.button_state = 0;
x09x09pev.flags = Ph_PTR_FLAG_Z_NONE;
x09x09pev.raw_flags = Ph_PTR_RAW_FLAG_NO_BUTTONS |Ph_PTR_RAW_FLAG_XY_REL;
x09}
x09pev.msec = 0;
x09pev.num_coord = 1;
x09pev.coord[0].x = 5;
x09pev.coord[0].y = 5;
x09pev.coord[0].z = 0;
x09pev.coord[0].dmsec = 0;
x09PhEventEmit(&ev, &rect, &pev);
}
static int_system(int group){
x09PhRegion_t region, ptr_region;
x09PhRect_t rect;
x09PhArea_t area;
x09memset(&ptr_region, 0, sizeof(ptr_region
));
x09ptr_region.flags = Ph_PTR_REGION;
x09ptr_region.input_group = group;
x09rect.ul.x = rect.ul.y = rect.lr.x = rect.lr.y = 0;
x09if(!(ptr_Rid = PhRegionOpen(Ph_REGION_FLAGS | Ph_REGION_INPUT_GROUP | Ph_REGION_RECT, &ptr_region, &rect, NULL))){
x09x09fprintf(stderr, "Could not open regionn");
x09x09exit(EXIT_FAILURE);
x09}
x09return (0);
}
x09
x09
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