modeless dialog
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@@ -19,6 +19,8 @@
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#define PAD 8
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Widget active_dialog = NULL;
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void button_callback(Widget widget, XtPointer client_data, XtPointer call_data)
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{
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puts("Button clicked!");
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@@ -29,19 +31,36 @@ void quit_callback(Widget widget, XtPointer client_data, XtPointer call_data)
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exit(0);
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}
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void dialog_callback(Widget widget, XtPointer client_data, XtPointer call_data)
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void open_dialog(Widget parent, const char *message)
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{
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Widget parent = (Widget)client_data;
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XmString msg = XmStringCreateLocalized("Hello from a secondary dialog!");
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Widget dialog = XmCreateMessageDialog(parent, "dialog", NULL, 0);
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XtVaSetValues(dialog,
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XmNdialogStyle, XmDIALOG_FULL_APPLICATION_MODAL,
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if (active_dialog && XtIsManaged(active_dialog))
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{
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XtDestroyWidget(active_dialog);
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active_dialog = NULL;
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}
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XmString msg = XmStringCreateLocalized((char *)message);
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active_dialog = XmCreateMessageDialog(parent, "dialog", NULL, 0);
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XtVaSetValues(active_dialog,
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XmNdialogStyle, XmDIALOG_MODELESS, /* 非模态 */
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XmNmessageString, msg,
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NULL);
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XmStringFree(msg);
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XtManageChild(dialog);
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XtManageChild(active_dialog);
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}
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void btn1_cb(Widget w, XtPointer client_data, XtPointer call_data)
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{
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open_dialog((Widget)client_data, "This is Dialog 1");
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}
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void btn2_cb(Widget w, XtPointer client_data, XtPointer call_data)
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{
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open_dialog((Widget)client_data, "This is Dialog 2");
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}
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int main(int argc, char *argv[])
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{
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XtAppContext app;
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@@ -107,7 +126,7 @@ int main(int argc, char *argv[])
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XtAddCallback(button, XmNactivateCallback, button_callback, NULL);
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/* 打开二级对话框的按钮 */
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Widget dialogBtn = XtVaCreateManagedWidget("Show Dialog",
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Widget dialogBtn1 = XtVaCreateManagedWidget("Show Dialog1",
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xmPushButtonWidgetClass, form,
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XmNtopAttachment, XmATTACH_WIDGET,
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XmNtopWidget, button,
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@@ -117,13 +136,25 @@ int main(int argc, char *argv[])
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XmNrightAttachment, XmATTACH_FORM,
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XmNrightOffset, PAD,
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NULL);
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XtAddCallback(dialogBtn, XmNactivateCallback, dialog_callback, form);
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XtAddCallback(dialogBtn1, XmNactivateCallback, btn1_cb, form);
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Widget dialogBtn2 = XtVaCreateManagedWidget("Show Dialog2",
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xmPushButtonWidgetClass, form,
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XmNtopAttachment, XmATTACH_WIDGET,
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XmNtopWidget, dialogBtn1,
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XmNtopOffset, PAD,
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XmNleftAttachment, XmATTACH_FORM,
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XmNleftOffset, PAD,
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XmNrightAttachment, XmATTACH_FORM,
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XmNrightOffset, PAD,
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NULL);
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XtAddCallback(dialogBtn2, XmNactivateCallback, btn2_cb, form);
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/* 文本框 */
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Widget text = XtVaCreateManagedWidget("text",
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xmTextWidgetClass, form,
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XmNtopAttachment, XmATTACH_WIDGET,
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XmNtopWidget, dialogBtn,
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XmNtopWidget, dialogBtn2,
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XmNtopOffset, PAD,
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XmNleftAttachment, XmATTACH_FORM,
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XmNleftOffset, PAD,
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@@ -221,7 +252,7 @@ int main(int argc, char *argv[])
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{
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/* 空闲时可以执行后台逻辑 */
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printf("Idle...\n");
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usleep(500000); /* 0.5秒 */
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usleep(50000); /* 0.05秒 */
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}
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}
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