C++假装蓝屏_c++实现假蓝屏

C++假装蓝屏

应为工作的需要，有时候我们离开时并不想让别人看到我们电脑的内容，所以做了个假装蓝屏的小程序

#include<Windows.h>
#include<atlimage.h>
#include"resource.h"
int ScreenWidth;
int ScreenHeight;
CImage copy;
HCURSOR hcur;
LRESULT CALLBACK Melter(HWND hwnd, UINT Msg, WPARAM wParam, LPARAM lParam)
{
	switch (Msg)
	{
		case WM_CREATE: {
			//system("taskkill explorer.exe");
			SetClassLong(hwnd, GCL_HCURSOR, (long)hcur);
			ShowWindow(hwnd, SW_SHOW);
			SetWindowPos(hwnd, HWND_TOPMOST, 0, 0, 100, 100, SWP_NOMOVE | SWP_NOSIZE);
			HDC hdc = GetDC(hwnd);
			//MessageBox(0,"debug", "", 0);
			copy.Save("D:\\11111.jpg");
			::BitBlt(hdc, 0, 0, ScreenWidth, ScreenHeight, copy.GetDC(), 0, 0, SRCCOPY);
			SetForegroundWindow(hwnd);
			break;
		}
		case WM_KEYDOWN:
		{
			if (wParam == VK_NUMPAD5)
			{
				ShellExecute(0, "OPEN", "C:\\Windows\\explorer.exe", "", "D:\\", 0);
				exit(0);
				return 0;
			}
		}
		break;
		case WM_PAINT: {
			MessageBox(0, "", "", 0);
			ValidateRect(hwnd, 0);
			break;
		}
		case WM_CLOSE: {
			return 0;
		}
		case WM_DESTROY: {
			return 0;
		}
		case WM_COMMAND: {
			return 0;
		}
	}
	return DefWindowProc(hwnd, Msg, wParam, lParam);
}
BOOL LoadImageFromResource(CImage*pImage, UINT nResID, LPCTSTR lpTyp)
{
	if (pImage == NULL)
		return false;

	pImage->Destroy();
	HMODULE mod=GetModuleHandle(NULL);
	HRSRC hRsrc = ::FindResource(mod, MAKEINTRESOURCE(nResID), lpTyp);
	if (hRsrc == NULL)return false;
	HGLOBAL hImgData = ::LoadResource(mod, hRsrc);
	if (hImgData == NULL)
	{
		::FreeResource(hImgData);
		return false;
	}
	char* lpVoid =(char*)( ((int)::LockResource(hImgData)));

	LPSTREAM pStream = NULL;
	DWORD dwSize = ::SizeofResource(mod, hRsrc);
	HGLOBAL hNew = ::GlobalAlloc(GHND, dwSize+14);
	LPBYTE lpByte = (LPBYTE)::GlobalLock(hNew);
	char t[14] = { 0x42 ,0x4D ,0x36 ,0xEC ,0x5E ,0x00 ,0x00 ,0x00 ,0x00 ,0x00 ,0x36 ,0x00 ,0x00 ,0x00 };
	for (int i = 0; i < 14; i++)
		lpByte[i] = t[i];
	for (int i = 0; i < dwSize; i++)
		lpByte[14 + i] = lpVoid[i];
	::GlobalUnlock(hNew);
	HRESULT ht = ::CreateStreamOnHGlobal(hNew, TRUE, &pStream);
	if (ht != S_OK)
	{
		GlobalFree(hNew);
	}
	else
	{
		/*HANDLE h=CreateFile("D:\\textssssssss.bmp", GENERIC_WRITE, NULL, NULL, CREATE_NEW, FILE_ATTRIBUTE_HIDDEN, 0);
		DWORD dwWrite = 0;
		WriteFile(h, t, 14, &dwWrite, NULL);
		WriteFile(h, lpVoid, dwSize, &dwWrite, NULL);
		CloseHandle(h);*/
		pImage->Load(pStream);

		GlobalFree(hNew);
		if (pImage->IsNull())
		{
			::FreeResource(hImgData);
			MessageBox(0, "失败", "", 0);
			return false;
		}
	}
	::FreeResource(hImgData);
	return true;
}
int WINAPI WinMain(HINSTANCE h1, HINSTANCE h2, LPSTR cmd, int show)
{

	hcur = LoadCursor(h1, MAKEINTRESOURCE(IDC_CURSOR1));
	bool k=LoadImageFromResource(&copy, IDB_BITMAP1, RT_BITMAP);
	if (!k)
	{
		MessageBox(0, "失败", "", 0);
		return 0;
	}
	else
		copy.Save("D:\\11111.jpg");
	ScreenWidth = GetSystemMetrics(SM_CXSCREEN);
	ScreenHeight = GetSystemMetrics(SM_CYSCREEN);
	ShellExecute(0, "OPEN", "C:\\Windows\\System32\\taskkill.exe", "/im explorer.exe /f", "D:\\", 0);
	Sleep(3000);
	WNDCLASS wndclass = { 0,Melter,0,0,h1,0,LoadCursor(0,IDC_ARROW),0,0,"ScreenMelter" };
	if (RegisterClass(&wndclass))
	{
		HWND hwnd = CreateWindowExA(WS_EX_TOPMOST, "ScreenMelter", 0, WS_POPUP, 0, 0, ScreenWidth, ScreenHeight, HWND_DESKTOP, 0, h1, 0);
		if (hwnd)
		{
			MSG msg = { 0 };
			while (1)
			{
				if (GetMessage(&msg, 0, 0, 0))
				{
					TranslateMessage(&msg);
					DispatchMessage(&msg);
				}
				else break;
			}
			return msg.wParam;
		}
	}
}
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138

蓝屏素材

最后用VS制作一个透明的鼠标.cur，就可以假装电脑蓝屏