/usr/share/dx/samples/dxlink/xapp.c is in dxsamples 4.2.0-1.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 | /* this example uses dxlink to find the maximum value of a data field */
/* the "user interface" is completely independent of the Data Explorer */
/* user interface. Note that this could also have been implemented using */
/* the DXCallModule interface for stand-alone applications. The disadvantage*/
/* would have been that executive features such as caching of outputs */
/* would not have been available in that case */
#include <Xm/Xm.h>
#include <Xm/Form.h>
#include <Xm/Label.h>
#include <Xm/PushB.h>
#include <Xm/ToggleB.h>
#include <Xm/Text.h>
#include "dxl.h"
void radio_cloudCB(Widget, XtPointer, XtPointer);
void radio_rainCB(Widget, XtPointer, XtPointer);
void radio_windCB(Widget, XtPointer, XtPointer);
void radio_tempCB(Widget, XtPointer, XtPointer);
void cloudhandler(DXLConnection *, const char *, const char *, void *);
void rainhandler(DXLConnection *, const char *, const char *, void *);
void windhandler(DXLConnection *, const char *, const char *, void *);
void temphandler(DXLConnection *, const char *, const char *, void *);
static String DefaultResources[] =
{
"*background: #b4b4b4b4b4b4",
"*foreground: black",
#ifdef sgi
"*fontList: -adobe-helvetica*bold-r*14*=bold\n\
-adobe-helvetica*medium-r*14*=normal\n\
-adobe-helvetica*medium-o*14*=oblique",
#else
"*fontList: -adobe-helvetica*bold-r*14*=bold\
-adobe-helvetica*medium-r*14*=normal\
-adobe-helvetica*medium-o*14*=oblique",
#endif
"*XmToggleButton.selectColor: CadetBlue",
"*XmText.shadowThickness: 1",
NULL
};
main(argc, argv)
int argc;
char *argv[];
{
Widget toplevel, main_w, label, textfield, radio_box;
Widget radio_cloud, radio_rain, radio_temp, radio_wind;
XtAppContext app;
XmString xms;
DXLConnection *conn;
int n;
Arg wargs[50];
/*
* Start the Data Explorer executive.
*/
conn = DXLStartDX("dx -exonly",NULL);
if (!conn)
{
printf("could not start dx");
exit(0);
}
XtSetLanguageProc (NULL, NULL, NULL);
toplevel = XtVaAppInitialize (&app, "Demos",
NULL, 0, &argc, argv,
DefaultResources, NULL);
DXLInitializeXMainLoop(app, conn);
/*
* Create the user interface for this application
*/
main_w = XtVaCreateManagedWidget("form",
xmFormWidgetClass, toplevel,
XmNwidth, 400,
XmNheight, 180,
XmNfractionBase, 5,
NULL);
n = 0;
XtSetArg(wargs[n], XmNtopAttachment, XmATTACH_FORM); n++;
XtSetArg(wargs[n], XmNleftAttachment, XmATTACH_FORM); n++;
XtSetArg(wargs[n], XmNleftOffset, 30); n++;
radio_box = (Widget)XmCreateRadioBox(main_w, "choice", wargs, n);
XtManageChild(radio_box);
xms = XmStringCreateSimple("cloudwater");
radio_cloud = XtVaCreateManagedWidget("radio_cloud",
xmToggleButtonWidgetClass, radio_box,
XmNlabelString, xms,
NULL);
XmStringFree(xms);
XtAddCallback(radio_cloud, XmNvalueChangedCallback,
(XtCallbackProc)radio_cloudCB,
(XtPointer)conn);
xms = XmStringCreateSimple("rainwater");
radio_rain = XtVaCreateManagedWidget("radio_rain",
xmToggleButtonWidgetClass, radio_box,
XmNlabelString, xms,
NULL);
XmStringFree(xms);
XtAddCallback(radio_rain, XmNvalueChangedCallback,
(XtCallbackProc)radio_rainCB,
(XtPointer)conn);
xms = XmStringCreateSimple("temperature");
radio_temp = XtVaCreateManagedWidget("radio_temp",
xmToggleButtonWidgetClass, radio_box,
XmNlabelString, xms,
NULL);
XmStringFree(xms);
XtAddCallback(radio_temp, XmNvalueChangedCallback,
(XtCallbackProc)radio_tempCB,
(XtPointer)conn);
xms = XmStringCreateSimple("wind");
radio_wind = XtVaCreateManagedWidget("radio_wind",
xmToggleButtonWidgetClass, radio_box,
XmNlabelString, xms,
NULL);
XmStringFree(xms);
XtAddCallback(radio_wind, XmNvalueChangedCallback,
(XtCallbackProc)radio_windCB,
(XtPointer)conn);
xms = XmStringCreateSimple("returned value:");
label = XtVaCreateManagedWidget("label",
xmLabelWidgetClass,
main_w,
XmNtopAttachment, XmATTACH_WIDGET,
XmNtopWidget, radio_box,
XmNbottomAttachment, XmATTACH_FORM,
XmNleftAttachment, XmATTACH_FORM,
XmNlabelString, xms,
NULL);
XmStringFree(xms);
textfield = XtVaCreateManagedWidget("text",
xmTextWidgetClass,
main_w,
XmNtopAttachment, XmATTACH_OPPOSITE_WIDGET,
XmNtopWidget, label,
XmNleftAttachment, XmATTACH_WIDGET,
XmNleftWidget, label,
XmNrightAttachment, XmATTACH_FORM,
XmNbottomAttachment, XmATTACH_FORM,
NULL);
/*
* Set the handlers for the various parameters
*/
DXLSetValueHandler(conn,"cloudmax", cloudhandler, textfield);
DXLSetValueHandler(conn,"rainmax", rainhandler, textfield);
DXLSetValueHandler(conn,"windmax", windhandler, textfield);
DXLSetValueHandler(conn,"tempmax", temphandler, textfield);
XtRealizeWidget (toplevel);
XtAppMainLoop (app);
}
/*
* The following are the handlers for data coming from DXLOutput. If
* data is received by the handler, it is presented in a text widget.
*/
void rainhandler(DXLConnection *conn, const char *name, const char *value,
void *data)
{
char string[100];
Widget text_widget = (Widget)data;
sprintf(string,"rainwater max value = %s", value);
XmTextSetString(text_widget, string);
}
void cloudhandler(DXLConnection *conn, const char *name, const char *value,
void *data)
{
char string[100];
Widget text_widget = (Widget)data;
sprintf(string,"cloudwater max value = %s", value);
XmTextSetString(text_widget, string);
}
void temphandler(DXLConnection *conn, const char *name, const char *value,
void *data)
{
char string[100];
Widget text_widget = (Widget)data;
sprintf(string,"temperature max value = %s", value);
XmTextSetString(text_widget, string);
}
void windhandler(DXLConnection *conn, const char *name, const char *value,
void *data)
{
char string[100];
Widget text_widget = (Widget)data;
sprintf(string,"wind max value = %s", value);
XmTextSetString(text_widget, string);
}
/*
* The following are the callbacks for the buttons in the
* user interface created above. In each case, some simple
* script language commands are sent to the Data Explorer
* executive. The maximum as computed by the Statistics
* module is then input to the DXLOutput tool. The handlers
* defined above wait for values to be received from
* DXLOutput, and then present the result in the text widget.
*/
void radio_cloudCB(Widget w, XtPointer xp1, XtPointer xp2)
{
DXLConnection *conn = (DXLConnection *)xp1;
DXLSend(conn, "g = Import(\"cloudwater\");");
DXLSend(conn, "mean,sd,var,min,max = Statistics(g);");
DXLSend(conn, "DXLOutput(\"cloudmax\", max);");
}
void radio_rainCB(Widget w, XtPointer xp1, XtPointer xp2)
{
DXLConnection *conn = (DXLConnection *)xp1;
DXLSend(conn, "g = Import(\"rainwater\");");
DXLSend(conn, "mean,sd,var,min,max = Statistics(g);");
DXLSend(conn, "DXLOutput(\"rainmax\", max);");
}
void radio_tempCB(Widget w, XtPointer xp1, XtPointer xp2)
{
DXLConnection *conn = (DXLConnection *)xp1;
DXLSend(conn, "g = Import(\"temperature\");");
DXLSend(conn, "mean,sd,var,min,max = Statistics(g);");
DXLSend(conn, "DXLOutput(\"tempmax\", max);");
}
void radio_windCB(Widget w, XtPointer xp1, XtPointer xp2)
{
DXLConnection *conn = (DXLConnection *)xp1;
DXLSend(conn, "g = Import(\"wind\");");
DXLSend(conn, "mean,sd,var,min,max = Statistics(g);");
DXLSend(conn, "DXLOutput(\"windmax\", max);");
}
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