mre下的控件实现(四、Button使用)

这里有一个实例使用（一、实现）中的按钮控件，达到的效果如下图所示，

用mre sdk（这里使用的是mre sdk 2.5版本）创建一个工程，工程名为mtid（实际上这个是我要在做一个工具）。

//生成的工程，自动生成mtid.c，代码改动成如下//主窗体在这里创建#include "vmsys.h"#include "vmio.h"#include "vmgraph.h"#include "vmchset.h"#include "vmstdlib.h"#include "ResID.h"#include "vm4res.h"#include "vmlog.h"#include "MtidView.h"#include "widget.h"VMINT        layer_hdl[1];VMINT        SCREEN_HEIGHT;VMINT        SCREEN_WIDTH;Widget* g_mtid_view;void handle_sysevt(VMINT message, VMINT param);void handle_keyevt(VMINT event, VMINT keycode);void handle_penevt(VMINT event, VMINT x, VMINT y);void handle_exitevt(void* ctx);void vm_main(void) {    layer_hdl[0] = -1;        vm_reg_sysevt_callback(handle_sysevt);    vm_reg_keyboard_callback(handle_keyevt);    vm_reg_pen_callback(handle_penevt);    vm_res_init();}void handle_sysevt(VMINT message, VMINT param) {    switch (message)     {    case VM_MSG_CREATE:        vm_log_info("handle_sysevt VM_MSG_CREATE");        if(layer_hdl[0] == -1)        {            SCREEN_HEIGHT = vm_graphic_get_screen_height();            SCREEN_WIDTH = vm_graphic_get_screen_width();            layer_hdl[0] = vm_graphic_create_layer(0, 0, vm_graphic_get_screen_width(),vm_graphic_get_screen_height(),-1);            vm_graphic_set_clip(0, 0, vm_graphic_get_screen_width(), vm_graphic_get_screen_height());        }        g_mtid_view = MtidViewInit(layer_hdl, handle_exitevt, NULL);        break;    case VM_MSG_ACTIVE:                if(layer_hdl[0] == -1)        {            layer_hdl[0] = vm_graphic_create_layer(0, 0, vm_graphic_get_screen_width(),vm_graphic_get_screen_height(),-1);            vm_graphic_set_clip(0, 0, vm_graphic_get_screen_width(), vm_graphic_get_screen_height());            widget_on_paint(g_mtid_view);        }        break;            case VM_MSG_PAINT:        vm_log_info("handle_sysevt VM_MSG_PAINT");        widget_on_paint(g_mtid_view);        break;            case VM_MSG_INACTIVE:        if( layer_hdl[0] != -1 )        {            vm_graphic_delete_layer(layer_hdl[0]);            layer_hdl[0] = -1;        }                break;        case VM_MSG_QUIT:        handle_exitevt(NULL);        break;        }}void handle_keyevt(VMINT event, VMINT keycode) {    if( layer_hdl[0] != -1 )    {        vm_graphic_delete_layer(layer_hdl[0]);        layer_hdl[0] = -1;    }        vm_exit_app();        /* quit application */}void handle_penevt(VMINT event, VMINT x, VMINT y){    widget_on_pen_evt(g_mtid_view, event, x, y);}void handle_exitevt(void* ctx){    if( layer_hdl[0] != -1 )    {        vm_graphic_delete_layer(layer_hdl[0]);        layer_hdl[0] = -1;    }    if( layer_hdl[1] != -1 )    {        vm_graphic_delete_layer(layer_hdl[0]);        layer_hdl[1] = -1;    }    widget_on_destroy(g_mtid_view);    vm_res_deinit();    vm_exit_app();} 

//主窗体 MtidView.h#ifndef __MTID_VIEW_H__#define __MTID_VIEW_H__#include "typedef.h"struct _Widget;typedef struct _Widget Widget;extern VMINT    SCREEN_HEIGHT;extern VMINT    SCREEN_WIDTH;typedef void (*ExitCbFunc)(void* ctx);Widget* MtidViewInit(int* layer, ExitCbFunc exit, void* ctx);void MtidViewOnPaint(Widget* thiz);void MtidViewOnPenEvt(Widget* thiz, VMINT event, VMINT x, VMINT y);void MtidViewOnKeyEvt(Widget* thiz, VMINT event, int keycode);#endif /*__MTID_VIEW_H__*/ 

//主窗体接口实现，在这里拼装子控件#include "button.h"#include "widget.h"#include "MtidView.h"#define MTID_NUMBER 15#define MTID_FILE_PATH "E:\\mre\\mtid.txt"typedef struct _MtidViewExtrat{    char write_buf[MTID_NUMBER + 1];    char mtid[MTID_NUMBER + 1];    ExitCbFunc exit;    void* ctx;} MtidViewExtra;static void MtidViewNumBtnOnClicked(void* param1, void* param2){    Widget* thiz = (Widget*)param2;    MtidViewExtra* extra = (MtidViewExtra*)thiz->extra;    char tmp[MTID_NUMBER + 1] = {0};    int len = 0;    int i = 0;    memset(extra->write_buf, 0, sizeof(extra->write_buf));    sprintf(tmp, "%d", (int)param1);    len = strlen(extra->mtid);    if(len < 15)    {        int i = 0;        strcat(extra->mtid, tmp);    }    len = strlen(extra->mtid);    for(i = 0; i < MTID_NUMBER - len; i++)    {        extra->write_buf[i] = '0';    }    strcat(extra->write_buf, extra->mtid);        MtidViewOnPaint(thiz);}static void MtidViewSureBtnOnClicked(void* param1, void* param2){    Widget* thiz = (Widget*)param2;    MtidViewExtra* extra = (MtidViewExtra*)thiz->extra;    int* layer = widget_get_layer(thiz);        wbh_write(MTID_FILE_PATH, "w", extra->write_buf);    if(NULL != extra->exit)        extra->exit(extra->ctx);}static void MtidViewClearBtnOnClicked(void* param1, void* param2){    Widget* thiz = (Widget*)param2;    MtidViewExtra* extra = (MtidViewExtra*)thiz->extra;    int len = 0;    int i = 0;    memset(extra->mtid, 0, sizeof(extra->mtid));    len = strlen(extra->mtid);    for(i = 0; i < MTID_NUMBER - len; i++)    {        extra->write_buf[i] = '0';    }    strcat(extra->write_buf, extra->mtid);    MtidViewOnPaint(thiz);}static void MtidViewAddNumBtn(Widget* thiz){    Rect rect = {0};    Widget* btn = NULL;    int btn_area_x = 0;    int btn_area_y = SCREEN_HEIGHT/5;    int btn_h = (SCREEN_HEIGHT*4/5)/4;    int btn_w = SCREEN_WIDTH/3;    int i = 0;    int* layer = widget_get_layer(thiz);    for(i = 1; i <= 10; i++)    {        char text[16] = {0};        sprintf(text, "%d", i%10);                rect.x_pos = btn_area_x + ((i-1)%3)*btn_w;        rect.y_pos = btn_area_y + (i-1)/3*btn_h;        rect.width = btn_w;        rect.height = btn_h;        btn = button_create(100 + i, rect, layer, text);        vm_log_info("MtidViewAddNumBtn btn:%d", btn);        button_set_on_clicked_func(btn, MtidViewNumBtnOnClicked, (void*)(i%10), (void*)thiz);        widget_add_child(thiz, btn);    }    rect.x_pos = btn_area_x + btn_w;    rect.y_pos = btn_area_y + 3*btn_h;    rect.height = btn_h;    rect.width = btn_w;    btn = button_create(100 + 11, rect, layer, "清空");    button_set_on_clicked_func(btn, MtidViewClearBtnOnClicked, NULL, (void*)thiz);    widget_add_child(thiz, btn);    rect.x_pos = btn_area_x + btn_w * 2;    rect.y_pos = btn_area_y + 3*btn_h;    rect.height = btn_h;    rect.width = btn_w;    btn = button_create(100 + 12, rect, layer, "确定");    button_set_on_clicked_func(btn, MtidViewSureBtnOnClicked, NULL, (void*)thiz);    widget_add_child(thiz, btn);}void MtidViewOnPaint(Widget* thiz){    int i = 0;    MtidViewExtra* extra = (MtidViewExtra*)thiz->extra;    VMWCHAR w_str[32] = {0};    VMINT wstr_width, wstr_height;    VMINT x_pos = widget_get_x_pos_abs(thiz);    VMINT y_pos = widget_get_y_pos_abs(thiz);    VMINT height = widget_get_height(thiz);    VMINT width = widget_get_width(thiz);    int* layer = widget_get_layer(thiz);    int layer_hd = layer[widget_get_layer_index(thiz)];    vm_graphic_color start_color;    vm_graphic_color end_color;        vm_graphic_color color;    color.vm_color_565 = VM_COLOR_WHITE;    vm_graphic_setcolor(&color);    vm_graphic_fill_rect_ex(layer_hd, 0, 0, width, height);    end_color.vm_color_565 = VM_COLOR_888_TO_565(217, 210, 168);    start_color.vm_color_565 = VM_COLOR_888_TO_565(217, 210, 168);    vm_graphic_gradient_paint_rect(layer_hd, x_pos + 2, y_pos + 2,     x_pos + width - 4, y_pos + height/5 - 4, start_color, end_color, VM_GDI_GP_VER);    vm_graphic_setcolor(&color);    vm_graphic_roundrect_ex(layer_hd, x_pos+1, y_pos+1, width-2, height/5-2, 5);    color.vm_color_565 = VM_COLOR_BLACK;    vm_graphic_setcolor(&color);    vm_gb2312_to_ucs2(w_str, sizeof(w_str), extra->write_buf);    vm_graphic_set_font(VM_LARGE_FONT);    wstr_width = vm_graphic_get_string_width(w_str);    wstr_height = vm_graphic_get_string_height(w_str);    vm_graphic_textout_to_layer(layer_hd, x_pos + width - wstr_width - 8,  y_pos + height/5 - wstr_height - 8,  w_str,  vm_wstrlen(w_str));    for(i = 0; i < MAX_WIDGET_CHILD; i++)    {        if(NULL != thiz->child[i])        {            widget_on_paint(thiz->child[i]);            }    }    vm_graphic_flush_layer(layer, 1);}void MtidViewOnPenEvt(Widget* thiz, VMINT event, VMINT x, VMINT y){    int i = 0;    for(i = 0; i < MAX_WIDGET_CHILD; i++)    {        vm_log_info("MtidViewOnPenEvt thiz->child[%d]:%d", i, thiz->child[i]);        if(NULL != thiz->child[i])        {            widget_on_pen_evt(thiz->child[i], event, x, y);            }    }    vm_graphic_flush_screen();}void MtidViewOnKeyEvt(Widget* thiz, int event, int keycode){}void MtidViewOnDestroy(Widget* thiz){    int i = 0;    for(i = 0; i < MAX_WIDGET_CHILD; i++)    {        if(NULL != thiz->child[i])        {            widget_on_destroy(thiz->child[i]);                thiz->child[i] = NULL;        }    }    if(thiz->extra)        WBH_FREE(thiz->extra);    widget_deinit(thiz);    WBH_FREE(thiz);}Widget* MtidViewInit(int* layer, ExitCbFunc exit, void* ctx){    Widget* thiz = NULL;    Rect rect = {0};    MtidViewExtra* extra = NULL;    int i =0, len =0;        thiz = WBH_MALLOC(sizeof(Widget));    extra = WBH_MALLOC(sizeof(MtidViewExtra));    thiz->on_destroy = (OnDestroyFunc)MtidViewOnDestroy;    thiz->on_paint = (OnPaintFunc)MtidViewOnPaint;    thiz->on_pen_event = (OnPenEventFunc)MtidViewOnPenEvt;    thiz->on_key_event = (OnKeyEventFunc)MtidViewOnKeyEvt;    extra->exit = exit;    extra->ctx = ctx;    thiz->extra = (void*)extra;    rect.x_pos= 0;    rect.y_pos = 0;    rect.width = SCREEN_WIDTH;    rect.height = SCREEN_HEIGHT;    widget_init(thiz, CONTROL_TYPE_VIEW, 100, rect, layer);    MtidViewAddNumBtn(thiz);    len = strlen(extra->mtid);    for(i = 0; i < MTID_NUMBER - len; i++)    {        extra->write_buf[i] = '0';    }    strcat(extra->write_buf, extra->mtid);    return thiz;}