MFC小笔记之窗口

获取屏幕宽
::GetSystemMetrics(SM_CXSCREEN);


获取屏幕高

::GetSystemMetrics(SM_CYSCREEN);

使窗口随鼠标点击拖动

void OnLButtonDown(UINT nFlags, CPoint point)
{
CDialog::OnLButtonDown(nFlags, point);

。。。。。。
SendMessage(WM_SYSCOMMAND, 0xF012, 0);

。。。。。。

}

去掉标题栏和系统菜单
::SystemParametersInfo(SPI_SETDRAGFULLWINDOWS, TRUE, NULL, 0);
SetWindowLong(m_hWnd, GWL_STYLE, GetWindowLong(m_hWnd, GWL_STYLE) & (~(WS_CAPTION | WS_BORDER)));

使窗口透明

LONG wndStyle = GetWindowLong(hwnd, GWL_EXSTYLE);

if ((wndStyle & WS_EX_LAYERED) != WS_EX_LAYERED)
SetWindowLong(hwnd, GWL_EXSTYLE, wndStyle ^ WS_EX_LAYERED);

根据窗口属性更新窗口
void UpdateWndDisplay(CWnd *pWnd, CDC *pDesDC, CDC *pSrcDC)

{
if (pWnd == NULL || pDesDC == NULL || pSrcDC == NULL)
return;


CRect rect;
pWnd->GetWindowRect(&rect);


if ((GetWindowLong(pWnd->m_hWnd, GWL_EXSTYLE) & WS_EX_LAYERED) == WS_EX_LAYERED)
{
BLENDFUNCTION blend;
blend.BlendOp = 0;
blend.BlendFlags= 0;
blend.AlphaFormat= 1;
blend.SourceConstantAlpha = 255;


SIZE szWnd = {rect.Width(), rect.Height()};
POINT ptSrcPos = {0, 0};
POINT ptWndPos = {rect.left, rect.top};


pWnd->UpdateLayeredWindow(pDesDC, &ptWndPos, &szWnd, pSrcDC, 
&ptSrcPos, 0, &blend, ULW_ALPHA);
}
else
{
pDesDC->BitBlt(0, 0, rect.Width(), rect.Height(), pSrcDC, 0, 0, SRCCOPY);
}
}

显示鼠标
void DoShowCursor(BOOL bShow)

{
static int count = 0;


if (bShow)
{
while(count < 0)
{
count = ShowCursor(TRUE);
}
}
else
{
while(count >= 0)
{
count = ShowCursor(FALSE);
}
}
}

屏幕键盘
void ScreenKeyboard()

{
HINSTANCE  hlibrary; 
typedef BOOL (__stdcall *f_Wow64DisableWow64FsRedirection)(LPVOID);
hlibrary  =  ::LoadLibrary(_T("Kernel32.dll")); 


if (hlibrary != NULL)
{
f_Wow64DisableWow64FsRedirection p  =  
(f_Wow64DisableWow64FsRedirection)GetProcAddress(hlibrary, "Wow64DisableWow64FsRedirection");


typedef BOOL (__stdcall *f_Wow64RevertWow64FsRedirection)(LPVOID);


f_Wow64RevertWow64FsRedirection p1  =  
(f_Wow64DisableWow64FsRedirection)GetProcAddress(hlibrary, "Wow64RevertWow64FsRedirection"); 


if(p && p1)
{
PVOID oldValue = NULL; 
p(&oldValue);
ShellExecute(NULL, _T("open"), _T("osk.exe"), NULL, NULL, SW_SHOWNORMAL);
p1(oldValue);
}
else
{
ShellExecute(NULL, _T("open"), _T("osk.exe"), NULL, NULL, SW_SHOWNORMAL);
}
::FreeLibrary(hlibrary);
}
}

关闭进程

void KillProcess(CString strName)
{
DWORD aps[1024], cbNeeded, cbNeeded2, i;
TCHAR buffer[256];
BOOL killed;
HANDLE hProcess;
HMODULE hModule;


killed = FALSE;


EnumProcessesXP(aps, sizeof(aps), &cbNeeded);


for(i = 0; i < cbNeeded / sizeof(DWORD); ++i)
{
if(!(hProcess = OpenProcess(PROCESS_TERMINATE | PROCESS_QUERY_INFORMATION |
PROCESS_VM_READ, FALSE, aps[i])))
{
continue;
}


if(!EnumProcessModulesXP(hProcess, &hModule, sizeof(hModule), &cbNeeded2))
continue;


GetModuleBaseNameXP(hProcess, hModule, buffer, 256);


if(lstrcmpi(buffer, strName.GetBuffer(0)) == 0)
{
if(TerminateProcess(hProcess, 0))
killed = TRUE;


CloseHandle(hProcess);
break;
}


CloseHandle(hProcess);
}
}