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1.1 root 1: /************************************************************************\
2: *
3: * PROGRAM: MAIN.C
4: *
5: * PURPOSE: To test the resource-only DLL "THE_DLL.DLL".
6: *
7: * FUNCTIONS: WinMain() - initialization, create window, msg loop
8: * MainWndProc() - processes main window msgs
9: * DrawBitmap() - draw a specified bitmap in a specified DC
10: *
11: * COMMENTS: Loads the bitmap, the cursor, and the icon from
12: * THE_DLL.DLL. Uses the first two ni registering the
13: * app's window class. Uses the bitmap when painting
14: * the client area.
15: *
16: \************************************************************************/
17:
18: #include <windows.h>
19: #include "Main.h"
20: #include "the_dll.h"
21:
22:
23:
24: /************************************************************************\
25: *
26: * FUNCTION: WinMain (standard WinMain INPUTS/RETURNS)
27: *
28: * GLOBAL VARS: hLib - library instance handle
29: *
30: * LOCAL VARS: hwnd - handle of the main standard window
31: * msg - msg to get/dispatch
32: *
33: \************************************************************************/
34:
35: int APIENTRY WinMain (HANDLE hInstance,HANDLE hPrevInstance,
36: LPSTR lpCmdLine, int nCmdShow) {
37: HWND hwnd;
38: MSG msg;
39:
40:
41: if ((hLib = LoadLibrary ((LPTSTR)"the_dll.dll")) == NULL)
42: { MessageBox (NULL, "WinMain(): LoadLibrary() failed",
43: "Err! - RESDLL", MB_OK | MB_ICONHAND);
44: return 0;
45: }
46:
47: if (!hPrevInstance)
48: {
49: WNDCLASS wc;
50:
51: wc.style = CS_HREDRAW | CS_VREDRAW;;
52: wc.lpfnWndProc = (WNDPROC)MainWndProc;
53: wc.cbClsExtra = 0;
54: wc.cbWndExtra = 0;
55: wc.hInstance = hInstance;
56: wc.hIcon = LoadIcon (hLib, "dllicon");
57: wc.hCursor = LoadCursor (hLib, "dllcursor");
58: wc.hbrBackground = GetStockObject (WHITE_BRUSH);
59: wc.lpszMenuName = NULL;
60: wc.lpszClassName = (LPSTR) "RESDLL";
61:
62: if (!RegisterClass (&wc))
63: { MessageBox (NULL, "WinMain(): RegisterClass() failed",
64: "Err! - MAIN", MB_OK | MB_ICONHAND);
65: return(FALSE);
66: }
67: }
68:
69: if (!(hwnd = CreateWindow ("RESDLL", "RESDLL Sample Application",
70: WS_OVERLAPPEDWINDOW,
71: CW_USEDEFAULT, CW_USEDEFAULT,
72: CW_USEDEFAULT, CW_USEDEFAULT,
73: NULL, NULL, hInstance, NULL)))
74: return (NULL);
75:
76: ShowWindow(hwnd, nCmdShow);
77:
78: while (GetMessage(&msg, NULL, NULL, NULL))
79: { TranslateMessage(&msg);
80: DispatchMessage(&msg);
81: }
82: FreeLibrary (hLib);
83: return (msg.wParam);
84: UNREFERENCED_PARAMETER(lpCmdLine);
85: }
86:
87:
88:
89: /************************************************************************\
90: *
91: * FUNCTION: MainWndProc (standard window procedure INPUTS/RETURNS)
92: *
93: * GLOBAL VARS: hLib - library instance handle
94: *
95: * LOCAL VARS: hbm - handle of bitmap in THE_DLL.DLL
96: *
97: \************************************************************************/
98:
99: LONG APIENTRY MainWndProc (HWND hwnd, UINT message, UINT wParam,
100: LONG lParam)
101: { static HBITMAP hbm;
102:
103: switch (message)
104: { case WM_CREATE:
105: hbm = LoadBitmap (hLib, "dllbitmap");
106: break;
107: case WM_PAINT:
108: { RECT rect;
109: PAINTSTRUCT ps;
110:
111: GetClientRect (hwnd, &rect);
112: BeginPaint (hwnd, &ps);
113: /******************************************************************\
114: * draw the dllbitmap centered in middle of our client rect
115: \******************************************************************/
116: DrawBitmap (ps.hdc, hbm,
117: rect.right/2 - DLLBITMAP_WIDTH/2,
118: rect.bottom/2 - DLLBITMAP_HEIGHT/2);
119: EndPaint (hwnd, &ps);
120: return 0;
121: }
122: case WM_DESTROY:
123: DeleteObject ((HANDLE) hbm);
124: PostQuitMessage(NULL);
125: break;
126: default:
127: return (DefWindowProc(hwnd, message, wParam, lParam));
128: }
129: return (NULL);
130: }
131:
132:
133:
134: /************************************************************************\
135: *
136: * FUNCTION: DrawBitmap
137: *
138: * INPUTS: hdc - device context in which to draw bitmap
139: * hbm - handle of bitmap to draw
140: * xStart - x-coordinate of upper-left corner of destination
141: * rectangle
142: * yStart - y-coordinate of upper-left corner of destination
143: * rectangle
144: *
145: * LOCAL VARS: bm - BITMAP info of "hbm"
146: * hdcMem - a memory DC used for blt-ing
147: *
148: * COMMENTS: Draws a bitmap "hbm" in a DC "hdc" given the upper-left
149: * corner "xStart,yStart" of a destination rectangle.
150: *
151: \************************************************************************/
152:
153: void DrawBitmap (HDC hdc, HBITMAP hbm, int xStart, int yStart)
154: {
155: BITMAP bm;
156: HDC hdcMem;
157:
158: hdcMem = CreateCompatibleDC (hdc);
159: SelectObject (hdcMem, hbm);
160: SetMapMode (hdcMem, GetMapMode(hdc));
161:
162: GetObject (hbm, sizeof(BITMAP), (LPSTR)&bm);
163: BitBlt (hdc, xStart, yStart, bm.bmWidth, bm.bmHeight,
164: hdcMem, 0, 0, SRCCOPY);
165:
166: DeleteDC(hdcMem);
167: }
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