Windows API 函数学习(10)---定时器，静态控件示例

// PicCount.cpp : Defines the entry point for the application.
//演示了如何进行贴图，使用定时器的过程，动态创建透明背景的静态控件，设置背景、文本颜色

#include "stdafx.h"
#include "resource.h"
#include <stdio.h>
#include <Winbase.h>
#define MAX_LOADSTRING 100

// Global Variables:
HINSTANCE hInst; // current instance
TCHAR szTitle[MAX_LOADSTRING]; // The title bar text
TCHAR szWindowClass[MAX_LOADSTRING]; // The title bar text
HBITMAP hBmp[7];
HWND hPic;
HBRUSH hb;
// Foward declarations of functions included in this code module:
ATOM MyRegisterClass(HINSTANCE hInstance);
BOOL InitInstance(HINSTANCE, int);
LRESULT CALLBACK WndProc(HWND, UINT, WPARAM, LPARAM);
LRESULT CALLBACK About(HWND, UINT, WPARAM, LPARAM);
void CALLBACK myTimerProc(
HWND hwnd,
UINT uMsg,
UINT idEvent,
DWORD dwTime );
int APIENTRY WinMain(HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPSTR lpCmdLine,
int nCmdShow)
{
// TODO: Place code here.
MSG msg;
HACCEL hAccelTable;

// Initialize global strings
LoadString(hInstance, IDS_APP_TITLE, szTitle, MAX_LOADSTRING);
LoadString(hInstance, IDC_PICCOUNT, szWindowClass, MAX_LOADSTRING);
MyRegisterClass(hInstance);

// Perform application initialization:
if (!InitInstance (hInstance, nCmdShow))
{
return FALSE;
}

hAccelTable = LoadAccelerators(hInstance, (LPCTSTR)IDC_PICCOUNT);

// Main message loop:
while (GetMessage(&msg, NULL, 0, 0))
{
if (!TranslateAccelerator(msg.hwnd, hAccelTable, &msg))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
}

return msg.wParam;
}

//
// FUNCTION: MyRegisterClass()
//
// PURPOSE: Registers the window class.
//
// COMMENTS:
//
// This function and its usage is only necessary if you want this code
// to be compatible with Win32 systems prior to the 'RegisterClassEx'
// function that was added to Windows 95. It is important to call this function
// so that the application will get 'well formed' small icons associated
// with it.
//
ATOM MyRegisterClass(HINSTANCE hInstance)
{
WNDCLASSEX wcex;

wcex.cbSize = sizeof(WNDCLASSEX);

wcex.style = CS_HREDRAW | CS_VREDRAW;
wcex.lpfnWndProc = (WNDPROC)WndProc;
wcex.cbClsExtra = 0;
wcex.cbWndExtra = 0;
wcex.hInstance = hInstance;
wcex.hIcon = LoadIcon(hInstance, (LPCTSTR)IDI_PICCOUNT);
wcex.hCursor = LoadCursor(NULL, IDC_ARROW);
wcex.hbrBackground = (HBRUSH)(COLOR_WINDOW+1);
wcex.lpszMenuName = (LPCSTR)IDC_PICCOUNT;
wcex.lpszClassName = szWindowClass;
wcex.hIconSm = LoadIcon(wcex.hInstance, (LPCTSTR)IDI_SMALL);

return RegisterClassEx(&wcex);
}

//
// FUNCTION: InitInstance(HANDLE, int)
//
// PURPOSE: Saves instance handle and creates main window
//
// COMMENTS:
//
// In this function, we save the instance handle in a global variable and
// create and display the main program window.
//
BOOL InitInstance(HINSTANCE hInstance, int nCmdShow)
{
HWND hWnd;

hInst = hInstance; // Store instance handle in our global variable

hWnd = CreateWindow(szWindowClass, szTitle, WS_OVERLAPPEDWINDOW,
CW_USEDEFAULT, 0, 800, 600, NULL, NULL, hInstance, NULL);

if (!hWnd)
{
return FALSE;
}

ShowWindow(hWnd, nCmdShow);
UpdateWindow(hWnd);

return TRUE;
}

//
// FUNCTION: WndProc(HWND, unsigned, WORD, LONG)
//
// PURPOSE: Processes messages for the main window.
//
// WM_COMMAND - process the application menu
// WM_PAINT - Paint the main window
// WM_DESTROY - post a quit message and return
//
//
LRESULT CALLBACK WndProc(HWND hWnd, UINT message, WPARAM wParam, LPARAM lParam)
{
int wmId, wmEvent;
PAINTSTRUCT ps;
HDC hdc;
int i;
TCHAR szHello[MAX_LOADSTRING];
LoadString(hInst, IDS_HELLO, szHello, MAX_LOADSTRING);
static index;//静态变量用于图片的序号
switch (message)
{
case WM_CREATE:
hPic=CreateWindow("STATIC",NULL,WS_CHILD|WS_VISIBLE,0,480,200,200,hWnd,(HMENU)IDC_PIC,hInst,NULL);
SetTimer(hWnd,IDC_TIMER,1000,myTimerProc);//设置定时器
for(i=0;i<7;i++)
{
char temp[32]; //准备图片
sprintf(temp,"%s%d.bmp","girl",i);
hBmp[i]=(HBITMAP)LoadImage(hInst,temp,IMAGE_BITMAP,640,480,LR_LOADFROMFILE);
}
index=0;
break;
case WM_CTLCOLORSTATIC:
hb=(HBRUSH)GetStockObject(HOLLOW_BRUSH);//设置静态控件的背景为透明
SelectObject(HDC(wParam),hb);
SetTextColor(HDC(wParam),RGB(255,0,0));//设置文本颜色
SetBkColor(HDC(wParam),RGB(0,255,0));//设置背景颜色
return (long)hb;//必须返回画刷的句柄
case WM_COMMAND:
wmId = LOWORD(wParam);
wmEvent = HIWORD(wParam);
// Parse the menu selections:
switch (wmId)
{
case IDM_ABOUT:
DialogBox(hInst, (LPCTSTR)IDD_ABOUTBOX, hWnd, (DLGPROC)About);
break;
case IDM_EXIT:
DestroyWindow(hWnd);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
break;
case WM_PAINT:
HDC hMemdc;
hdc = BeginPaint(hWnd, &ps);
// TODO: Add any drawing code here...
RECT rt;
hMemdc=CreateCompatibleDC(hdc);//创建兼容DC
GetClientRect(hWnd, &rt);
//DrawText(hdc, szHello, strlen(szHello), &rt, DT_CENTER);
SelectObject(hMemdc,hBmp[index]);
BitBlt(hdc,0,0,640,480,hMemdc,0,0,SRCCOPY);
if(++index==7)
{
index=0;
}
EndPaint(hWnd, &ps);
DeleteDC(hMemdc);
break;
case WM_DESTROY:
if(hb){ DeleteObject(hb);}//删除画刷的句柄
for(i=0;i<7;i++)
{
DeleteObject(hBmp[i]);
}
KillTimer(hWnd,IDC_TIMER);
PostQuitMessage(0);
break;
default:
return DefWindowProc(hWnd, message, wParam, lParam);
}
return 0;
}

// Mesage handler for about box.
LRESULT CALLBACK About(HWND hDlg, UINT message, WPARAM wParam, LPARAM lParam)
{
switch (message)
{
case WM_INITDIALOG:
return TRUE;

case WM_COMMAND:
if (LOWORD(wParam) == IDOK || LOWORD(wParam) == IDCANCEL)
{
EndDialog(hDlg, LOWORD(wParam));
return TRUE;
}
break;
}
return FALSE;
}
void CALLBACK myTimerProc(
HWND hwnd,
UINT uMsg,
UINT idEvent,
DWORD dwTime )
{
SYSTEMTIME sm;
char tm[16];
GetSystemTime(&sm);
sprintf(tm,"%02d:%02d:%02d",sm.wHour+8,sm.wMinute,sm.wSecond);//格式化输出结果
SetDlgItemText(hwnd,IDC_PIC,tm);
InvalidateRect(hwnd,NULL,TRUE);
}