71 lines
1.7 KiB
C
71 lines
1.7 KiB
C
/*
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* 程序清单：DC上显示图像演示
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*
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* 这个例子会在创建出的view上显示图像
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*/
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#include "demo_view.h"
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#include <rtgui/widgets/button.h>
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#include <rtgui/widgets/filelist_view.h>
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#include <string.h>
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#if defined(RTGUI_USING_DFS_FILERW) || defined(RTGUI_USING_STDIO_FILERW)
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/* 打开按钮的回调函数 */
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static void open_btn_onbutton(PVOID wdt, rtgui_event_t* event)
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{
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}
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/* 演示视图的事件处理函数 */
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static rt_bool_t demo_view_event_handler(PVOID wdt, rtgui_event_t *event)
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{
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rtgui_widget_t *widget = RTGUI_WIDGET(wdt);
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rt_bool_t result;
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/* 先调用默认的事件处理函数(这里只关心PAINT事件，但演示视图还有本身的一些控件) */
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result = rtgui_view_event_handler(widget, event);
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if (event->type == RTGUI_EVENT_PAINT)
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{
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rtgui_dc_t* dc;
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/* 获得控件所属的DC */
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dc = rtgui_dc_begin_drawing(widget);
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if (dc == RT_NULL) return RT_FALSE;
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/* 绘图完成 */
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rtgui_dc_end_drawing(dc);
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}
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return result;
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}
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/* 创建用于显示图像的演示视图 */
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rtgui_view_t* demo_gui_image(rtgui_view_t* parent_view)
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{
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rtgui_button_t* open_btn;
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rtgui_view_t *view;
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rtgui_filelist_view_t *fview;
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/* 先创建一个演示视图 */
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view = demo_view_create(parent_view, "图像演示");
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#ifdef _WIN32
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fview = rtgui_filelist_view_create(view, "d:\\", "*.*", 5, 65, 200, 180);
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#else
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fview = rtgui_filelist_view_create(view, "/", "*.*", 5, 65, 200, 180);
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#endif
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if (view != RT_NULL)
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/* 设置默认的事件处理函数到demo_view_event_handler函数 */
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rtgui_widget_set_event_handler(view, demo_view_event_handler);
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/* 添加一个按钮 */
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open_btn = rtgui_button_create(view, "打开图像文件", 10, 40, 120, 22);
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rtgui_button_set_onbutton(open_btn, open_btn_onbutton);
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return view;
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}
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#endif
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