第一次编写Hello World的问题
在NewQoMobileSDK的环境中编写如下代码：#include <Windows.h>#include <wingdi.h>
LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam);
int WinMain(HINSTANCE hInstance,HINSTANCE hPrevInstance,LPWSTR lpCmdLine,int nShowCmd)
{
//1、创建一个窗体类对象
WNDCLASSW ws;
ws.cbClsExtra = 0;
ws.cbWndExtra = 0;
ws.hbrBackground = (HBRUSH)GetStockObject(WHITE_BRUSH);
ws.hCursor = NULL;
ws.hIcon = NULL;
ws.hInstance = hInstance;
ws.lpfnWndProc = WndProc;
ws.lpszClassName = TEXT("hello world");
ws.lpszMenuName= NULL;
ws.style = CS_VREDRAW | CS_HREDRAW;
//2、注册窗体类
if (! RegisterClass(&ws))
{
return -1;
}
//3、创建窗体
HWND hwnd = CreateWindow(TEXT("hello world"),TEXT("My First Window"),WS_VISIBLE | WS_BORDER | WS_SYSMENU | WS_MAXIMIZEBOX | WS_MINIMIZEBOX | WS_CAPTION,
10,10,400,300,
NULL,NULL,hInstance,NULL);
//4、更新并显示窗体内容
UpdateWindow(hwnd);
ShowWindow(hwnd,CS_VREDRAW | CS_HREDRAW);
MSG msg;
//5、获取系统消息
while(GetMessage(&msg,NULL,0,0))
{
TranslateMessage(&msg);
DispatchMessage(&msg);
}
return 1;
}
LRESULT CALLBACK WndProc(HWND hwnd,UINT message,WPARAM wParam,LPARAM lParam)
{
PAINTSTRUCT ps;
HDC hdc;
RECT rect;
switch(message)
{
case WM_DESTROY:
PostQuitMessage(1);
break;
case WM_PAINT:
GetClientRect(hwnd,&rect);
hdc = BeginPaint(hwnd,&ps);
DrawText(hdc,TEXT("hello world"),-1,&rect,DT_VCENTER | DT_CALCRECT);
EndPaint(hwnd,&ps);
break;
default:
DefWindowProc(hwnd,message,wParam,lParam);
break;
}
/*if(message == WM_DESTROY)
{
PostQuitMessage(1);
}
GetClientRect(hwnd,&rect);
if (message == WM_PAINT)
{
hdc = BeginPaint(hwnd,&ps);
DrawText(hdc,TEXT("hello world"),-1,&rect,DT_VCENTER | DT_CALCRECT);
EndPaint(hwnd,&ps);
}
return DefWindowProc(hwnd,message,wParam,lParam);*/
return 0;
}这是模拟器产生的结果：
就是不知道为什么不能和视频那样显示hello world
那位知道的指点一下，谢谢!
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