了解WINDOWS API基本数据类型

代码：

 1 /*header file*/
 2 #include <Windows.h>
 3 #include <stdio.h>
 4
 5 /*function windows data type demo*/
 6
 7 int WINAPI WinMain(
 8     HINSTANCE hInstance,
 9     HINSTANCE hPrevInstance,
10     LPSTR lpCmdLine,
11     int nCmdShow
12     )
13 {
14     //define string
15     LPSTR szString = "Windows data type,string.";
16     //define char arry
17     CHAR lpString[120];
18     //define type of DWORD data
19     DWORD dwMax = 0xFFFFFFFF;
20     DWORD dwOne = 0x1;
21     //define int data
22     INT iMax = 0xFFFFFFFF;
23     INT iOne = 0x1;
24
25     //display string
26     MessageBox(NULL,szString,"LPSTR",MB_OK);
27     //copy mem
28     CopyMemory(lpString,szString,lstrlen(szString)+1);
29     MessageBox(NULL,lpString,"CHAR[]",MB_OK);
30
31     //compare DWORD and display result
32     if(dwMax>dwOne)
33     {
34         MessageBox(NULL,"DWORD type of data 0xFFFFFFFF > 0x1","DWORD",MB_OK);
35     }
36     //compare INT and display result
37     if(iMax<iOne)
38     {
39         MessageBox(NULL,"INT type of data 0xFFFFFFFF < 0x1","INT",MB_OK);
40     }
41     return 0;
42 }

测试截图：