• 16 Windows编程——系统内置窗口子类型之edit、ComboBox、ownerbutton、listbox

    edit类型的子窗口

    ES_MULTILINE：多行输入文本框

    窗口的消息：

    WL_COMMAND：

    EN_CHANGE：当edit窗口内的文本内容改变的时候，edit子窗口给父窗口发送一个WL_COMMAND消息，其通知码是EN_CHANGE。

    WM_GETTEXT：

    用SendMessage函数给edit窗口发送这个消息，同时，给wparam参数传递我们想要获得的字符个数，lParam传递一个内存块地址，sendMessage函数返回后，
    lParam指向的内存中，将保存获得的字符。

    WL_GETTEXTLENGTH：

    用 SendMessage函数给edit窗口发送这个消息，将wParam和1Param都赋值为NULL，那SendMessage函数，将返回edit中的字符个数，但这个字符个数不包括NULL结尾字符。

    edit空间演示源码

     1 #include<Windows.h>
 2 
 3 LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
 4 
 5 int WinMain(HINSTANCE hInst, HINSTANCE tmp, LPSTR szCmd, int nShow)
 6 {
 7     WNDCLASS WndClass;
 8     TCHAR* ClassName = TEXT("MyClass");
 9     HWND hwnd;
10     MSG msg;
11     HBRUSH hBrush;
12     hBrush = CreateSolidBrush(RGB(249,98,241));
13 
14     WndClass.cbClsExtra = 0;
15     WndClass.cbWndExtra = 0;
16     WndClass.hbrBackground = hBrush;
17     WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
18     WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
19     WndClass.hInstance = hInst;
20     WndClass.lpfnWndProc = WindProc;
21     WndClass.lpszClassName = ClassName;
22     WndClass.lpszMenuName = NULL;
23     WndClass.style = CS_VREDRAW | CS_HREDRAW;
24 
25     if (!RegisterClass(&WndClass))
26     {
27         MessageBox(NULL, TEXT("Gegister Class Fail!!"), TEXT("error"), MB_OK);
28         return 0;
29     }
30 
31     hwnd = CreateWindow(ClassName, TEXT("Hello"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 500, 300, NULL, NULL, hInst, NULL);
32     if (hwnd == NULL)
33     {
34         MessageBox(NULL, TEXT("Create Window Fail!!"), TEXT("error"), MB_OK);
35         return 0;
36     }
37     ShowWindow(hwnd, nShow);
38     UpdateWindow(hwnd);
39 
40     while (GetMessage(&msg, NULL, 0, 0))
41     {
42         TranslateMessage(&msg);
43         DispatchMessage(&msg);
44     }
45 
46     return 0;
47 }
48 
49 LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
50 {
51     HDC hdc;
52     static int cx, cy;
53     static editHwnd, staticHwnd;
54     TCHAR str[1024];
55     int length;
56     switch (message)
57     {
58     case WM_CREATE:
59         editHwnd = CreateWindow(TEXT("edit"),NULL, WS_CHILD | WS_VISIBLE|WS_BORDER|ES_MULTILINE|ES_AUTOVSCROLL , 0, 0, 0, 0, hwnd, (HMENU)1, GetModuleHandle(NULL), NULL);
60         staticHwnd = CreateWindow(TEXT("static"), NULL, WS_CHILD | WS_VISIBLE|WS_BORDER, 0, 0, 0, 0, hwnd, (HMENU)2, GetModuleHandle(NULL), NULL);
61         return 0;
62     case WM_SIZE:
63         cx = LOWORD(lParam);
64         cy = HIWORD(lParam);
65         MoveWindow(editHwnd, 0, 0, cx/2, cy/2, TRUE);
66         MoveWindow(staticHwnd, cx / 2, cy / 2, cx, cy, TRUE);
67         return 0;
68     case WM_COMMAND:
69         if (HIWORD(wParam)==EN_CHANGE)
70         {
71             length = SendMessage(editHwnd, WM_GETTEXTLENGTH, NULL, NULL) + 1;
72             length = length > 1023 ? 1023 : length;
73             SendMessage(editHwnd, WM_GETTEXT, length, (LPARAM)str) ;
74             str[length] = '/0';
75             SetWindowText(staticHwnd,str);
76         }
77         return 0;
78     case WM_DESTROY:
79         PostQuitMessage(0);
80         return 0;
81     default:
82         break;
83     }
84 
85     return DefWindowProc(hwnd, message, wParam, lParam);
86 }
    View Code

    运行结果

    ComboBox类型的子窗口 

    ComboBox子窗口的三种主要子类型：

    CB_ADDSTRING：在combobox控件的list框中，增加一个字符串，wParam=NULL，lParam符串的指针。

    WL_COMMAND：

    CBN_SELCHANGE：当combobox中的选项发生变化时，发送这个通知码，其中LOWORD（lParam）就是这个combobox的窗口标识ID。

    CB_GETCURSEL：用SendMessage函数，发送这个消息给combobox子窗口，那么这个函数将返回被选中的列表项的索引（索引是从0开始的）。wParam=lParam=NULL.

    演示代码

     1 #include<Windows.h>
 2 #include<WinUser.h>
 3 #include<tchar.h>
 4 #include<stdio.h>
 5 
 6 LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
 7 
 8 int WinMain(HINSTANCE hInst, HINSTANCE tmp, LPSTR szCmd, int nShow)
 9 {
10     WNDCLASS WndClass;
11     TCHAR* ClassName = TEXT("MyClass");
12     HWND hwnd;
13     MSG msg;
14 
15     WndClass.cbClsExtra = 0;
16     WndClass.cbWndExtra = 0;
17     WndClass.hbrBackground = (HBRUSH)(COLOR_WINDOW + 1);
18     WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
19     WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
20     WndClass.hInstance = hInst;
21     WndClass.lpfnWndProc = WindProc;
22     WndClass.lpszClassName = ClassName;
23     WndClass.lpszMenuName = NULL;
24     WndClass.style = CS_VREDRAW | CS_HREDRAW;
25 
26     if (!RegisterClass(&WndClass))
27     {
28         MessageBox(NULL, TEXT("Gegister Class Fail!!"), TEXT("error"), MB_OK);
29         return 0;
30     }
31 
32     //CreateWindow返回之前，会发送WM_CREATE消息
33     hwnd = CreateWindow(ClassName, TEXT("Hello"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 500, 300, NULL, NULL, hInst, NULL);
34     if (hwnd == NULL)
35     {
36         MessageBox(NULL, TEXT("Create Window Fail!!"), TEXT("error"), MB_OK);
37         return 0;
38     }
39     ShowWindow(hwnd, nShow);
40     UpdateWindow(hwnd);
41 
42     while (GetMessage(&msg, NULL, 0, 0))
43     {
44         TranslateMessage(&msg);
45         DispatchMessage(&msg);
46     }
47 
48     return 0;
49 }
50 
51 LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
52 {
53     PAINTSTRUCT pt;
54     HDC hdc;
55     static HWND ComboHwnd1, ComboHwnd2, ComboHwnd3,button,staticHwnd;
56     TCHAR str[1024];
57     switch (message)
58     {
59     case WM_CREATE:
60         ComboHwnd1 = CreateWindow(TEXT("ComboBox"), NULL, WS_CHILD | WS_VISIBLE | CBS_SIMPLE|CBS_AUTOHSCROLL|WS_VSCROLL, 0, 0, 0, 0, hwnd, (HMENU)1, GetModuleHandle(NULL), NULL);
61         ComboHwnd2 = CreateWindow(TEXT("ComboBox"), NULL, WS_CHILD | WS_VISIBLE | CBS_DROPDOWN, 0, 0, 0, 0, hwnd, (HMENU)2, GetModuleHandle(NULL), NULL);
62         ComboHwnd3 = CreateWindow(TEXT("ComboBox"), NULL, WS_CHILD | WS_VISIBLE | CBS_DROPDOWNLIST, 0, 0, 0, 0, hwnd, (HMENU)3, GetModuleHandle(NULL), NULL);
63         button = CreateWindow(TEXT("button"), TEXT("OK"), WS_CHILD | WS_VISIBLE , 0, 0, 0, 0, hwnd, (HMENU)4, GetModuleHandle(NULL), NULL);
64         staticHwnd= CreateWindow(TEXT("static"), NULL, WS_CHILD | WS_VISIBLE, 0, 0, 0, 0, hwnd, (HMENU)5, GetModuleHandle(NULL), NULL);
65         return 0;
66     case WM_SIZE:
67         MoveWindow(ComboHwnd1, 0, 0, 100, 100, TRUE);
68         MoveWindow(ComboHwnd2, 150, 0, 100, 150, TRUE);
69         MoveWindow(ComboHwnd3, 300, 0, 100, 150, TRUE);
70         MoveWindow(button, 20, 120, 50, 25, TRUE);
71         MoveWindow(staticHwnd, 0, 150, 100, 100, TRUE);
72         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-1"));
73         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-2"));
74         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-3"));
75         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-4"));
76         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-5"));
77         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-6"));
78         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-7"));
79         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-8"));
80         SendMessage(ComboHwnd1, CB_ADDSTRING, NULL, (LPARAM)TEXT("char-9"));
81         return 0;
82     case WM_COMMAND:
83         if (HIWORD(wParam) == CBN_SELCHANGE)
84         {
85             GetWindowText(ComboHwnd1,str,50);
86             SetWindowText(staticHwnd,str);
87         }
88         return 0;
89     case WM_DESTROY:
90         PostQuitMessage(0);
91         return 0;
92     default:
93         break;
94     }
95 
96     return DefWindowProc(hwnd, message, wParam, lParam);
97 }
    View Code

    运行结果：

     ownerbutton、listbox

    演示代码

      1 #include<Windows.h>
  2 #include<WinUser.h>
  3 #include<tchar.h>
  4 #include<stdio.h>
  5 
  6 LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam);
  7 
  8 int WinMain(HINSTANCE hInst, HINSTANCE tmp, LPSTR szCmd, int nShow)
  9 {
 10     WNDCLASS WndClass;
 11     TCHAR* ClassName = TEXT("MyClass");
 12     HWND hwnd;
 13     MSG msg;
 14     HBRUSH hBrush;
 15 
 16     hBrush = CreateSolidBrush(RGB(249, 98, 241));
 17 
 18     WndClass.cbClsExtra = 0;
 19     WndClass.cbWndExtra = 0;
 20     WndClass.hbrBackground = hBrush;
 21     WndClass.hCursor = LoadCursor(NULL, IDC_ARROW);
 22     WndClass.hIcon = LoadIcon(NULL, IDI_APPLICATION);
 23     WndClass.hInstance = hInst;
 24     WndClass.lpfnWndProc = WindProc;
 25     WndClass.lpszClassName = ClassName;
 26     WndClass.lpszMenuName = NULL;
 27     WndClass.style = CS_VREDRAW | CS_HREDRAW;
 28 
 29     if (!RegisterClass(&WndClass))
 30     {
 31         MessageBox(NULL, TEXT("Gegister Class Fail!!"), TEXT("error"), MB_OK);
 32         return 0;
 33     }
 34 
 35     //CreateWindow返回之前，会发送WM_CREATE消息
 36     hwnd = CreateWindow(ClassName, TEXT("Hello"), WS_OVERLAPPEDWINDOW, CW_USEDEFAULT, CW_USEDEFAULT, 500, 300, NULL, NULL, hInst, NULL);
 37     if (hwnd == NULL)
 38     {
 39         MessageBox(NULL, TEXT("Create Window Fail!!"), TEXT("error"), MB_OK);
 40         return 0;
 41     }
 42     ShowWindow(hwnd, nShow);
 43     UpdateWindow(hwnd);
 44 
 45     while (GetMessage(&msg, NULL, 0, 0))
 46     {
 47         TranslateMessage(&msg);
 48         DispatchMessage(&msg);
 49     }
 50 
 51     return 0;
 52 }
 53 
 54 LRESULT CALLBACK WindProc(HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
 55 {
 56     static int cx, cy;
 57     static HWND ownerbutton,scroll,listbox;
 58     int index;
 59     TCHAR str[1024];
 60     RECT rect;
 61     switch (message)
 62     {
 63     case WM_CREATE:
 64         //创建普通button
 65         //ownerbutton = CreateWindow(TEXT("button"), TEXT("OK"), WS_CHILD | WS_VISIBLE, 0, 0, 0, 0, hwnd, (HMENU)1, GetModuleHandle(NULL), NULL);
 66         //创建ownerbutton
 67         ownerbutton = CreateWindow(TEXT("button"), TEXT("OK"), WS_CHILD | WS_VISIBLE|BS_OWNERDRAW, 0, 0, 0, 0, hwnd, (HMENU)1, GetModuleHandle(NULL), NULL);
 68         scroll = CreateWindow(TEXT("ScrollBar"), NULL, WS_CHILD | WS_VISIBLE|SBS_VERT , 0, 0, 0, 0, hwnd, (HMENU)2, GetModuleHandle(NULL), NULL);
 69         listbox = CreateWindow(TEXT("listbox"), NULL, WS_CHILD | WS_VISIBLE |LBS_STANDARD, 0, 0, 0, 0, hwnd, (HMENU)3, GetModuleHandle(NULL), NULL);
 70         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-1"));
 71         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-2"));
 72         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-3"));
 73         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-4"));
 74         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-5"));
 75         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-6"));
 76         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-7"));
 77         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-8"));
 78         SendMessage(listbox, LB_ADDSTRING, NULL, (LPARAM)TEXT("char-9"));
 79         return 0;
 80     case WM_SIZE:
 81         cx = LOWORD(lParam);
 82         cy = HIWORD(lParam);
 83         MoveWindow(ownerbutton, 10, 10, 100, 20, TRUE);
 84         MoveWindow(scroll, cx-20, 0, 20, cy, TRUE);
 85         MoveWindow(listbox, 200, 100, 100, 50, TRUE);
 86         return 0;
 87     case WM_PAINT:
 88         return 0;
 89     case WM_DRAWITEM:
 90         SetTextColor(((DRAWITEMSTRUCT*)lParam)->hDC, RGB(255, 0, 0));
 91         TextOut(((DRAWITEMSTRUCT*)lParam)->hDC,30,2, TEXT("确定"),2);
 92         return 0;
 93     case WM_CTLCOLORBTN:
 94         GetWindowRect(ownerbutton, &rect);
 95         SetBkMode((HDC)wParam,TRANSPARENT);
 96         SelectObject((HDC)wParam, CreateSolidBrush(RGB(0, 255, 0)));
 97         Rectangle((HDC)wParam,0,0,rect.right-rect.left,rect.bottom-rect.top);
 98         return (LRESULT)CreateSolidBrush(RGB(0, 255, 0));
 99     case WM_VSCROLL:
100         //处理方法参考之前滚动条处理方法
101         return 0;
102     case WM_COMMAND:
103         index = SendMessage(listbox, LB_GETCURSEL, NULL,NULL);
104         SendMessage(listbox, LB_GETTEXT, index, (LPARAM)str);
105         return 0;
106     case WM_DESTROY:
107         PostQuitMessage(0);
108         return 0;
109     default:
110         break;
111     }
112 
113     return DefWindowProc(hwnd, message, wParam, lParam);
114 }
    View Code
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  • 原文地址：https://www.cnblogs.com/kelamoyujuzhen/p/9343731.html
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