draw_bitmap.h

本文介绍了Windows应用程序中消息处理函数WndProc和特定资源ID的宏定义,包括退出、测试及关于对话框的处理。通过宏定义实现了资源标识符的指定,并展示了两个回调函数的声明。

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LRESULT CALLBACK WndProc  (HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK About    (HWND, UINT, WPARAM, LPARAM);

else if(code == LV_EVENT_DRAW_MAIN) { if(img->h == 0 || img->w == 0) return; if(img->scale_x == 0 || img->scale_y == 0) return; lv_layer_t * layer = lv_event_get_layer(e); if(img->src_type == LV_IMAGE_SRC_FILE || img->src_type == LV_IMAGE_SRC_VARIABLE) { lv_draw_image_dsc_t draw_dsc; lv_draw_image_dsc_init(&draw_dsc); lv_obj_init_draw_image_dsc(obj, LV_PART_MAIN, &draw_dsc); lv_area_t clip_area_ori = layer->_clip_area; lv_image_get_pivot(obj, &draw_dsc.pivot); draw_dsc.scale_x = img->scale_x; draw_dsc.scale_y = img->scale_y; draw_dsc.rotation = img->rotation; draw_dsc.antialias = img->antialias; draw_dsc.blend_mode = img->blend_mode; draw_dsc.bitmap_mask_src = img->bitmap_mask_src; draw_dsc.src = img->src; lv_area_set(&draw_dsc.image_area, obj->coords.x1, obj->coords.y1, obj->coords.x1 + img->w - 1, obj->coords.y1 + img->h - 1); draw_dsc.clip_radius = lv_obj_get_style_radius(obj, LV_PART_MAIN); lv_area_t coords; if(img->align < LV_IMAGE_ALIGN_AUTO_TRANSFORM) { lv_area_align(&obj->coords, &draw_dsc.image_area, img->align, img->offset.x, img->offset.y); coords = draw_dsc.image_area; } else if(img->align == LV_IMAGE_ALIGN_TILE) { lv_area_intersect(&layer->_clip_area, &layer->_clip_area, &obj->coords); lv_area_move(&draw_dsc.image_area, img->offset.x, img->offset.y); lv_area_move(&draw_dsc.image_area, ((layer->_clip_area.x1 - draw_dsc.image_area.x1 - (img->w - 1)) / img->w) * img->w, ((layer->_clip_area.y1 - draw_dsc.image_area.y1 - (img->h - 1)) / img->h) * img->h); coords = layer->_clip_area; draw_dsc.tile = 1; } else { coords = draw_dsc.image_area; } lv_draw_image(layer, &draw_dsc, &coords); layer->_clip_area = clip_area_ori; }
最新发布
03-20
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