传入LPRECT lpRect型参数碰到疑惑,请教高手-CSDN社区

图像处理中关于取指数的C++源代码 #ifndef _INC_DIBAPI #define _INC_DIBAPI /* Handle to a DIB */ DECLARE_HANDLE(HDIB); /* DIB constants */ #define PALVERSION 0x300 /* DIB Macros*/ #define IS_WIN30_DIB(lpbi) ((*(LPDWORD)(lpbi)) == sizeof(BITMAPINFOHEADER)) #define RECTWIDTH(lpRect) ((lpRect)->right - (lpRect)->left) #define RECTHEIGHT(lpRect) ((lpRect)->bottom - (lpRect)->top) // WIDTHBYTES performs DWORD-aligning of DIB scanlines. The "bits" // parameter is the bit count for the scanline (biWidth * biBitCount), // and this macro returns the number of DWORD-aligned bytes needed // to hold those bits. #define WIDTHBYTES(bits) (((bits) + 31) / 32 * 4) /* Function prototypes */ BOOL WINAPI PaintDIB (HDC, LPRECT, HDIB, LPRECT, CPalette* pPal); BOOL WINAPI CreateDIBPalette(HDIB hDIB, CPalette* cPal); LPSTR WINAPI FindDIBBits (LPSTR lpbi); DWORD WINAPI DIBWidth (LPSTR lpDIB); DWORD WINAPI DIBHeight (LPSTR lpDIB); WORD WINAPI PaletteSize (LPSTR lpbi); WORD WINAPI DIBNumColors (LPSTR lpbi); HGLOBAL WINAPI CopyHandle (HGLOBAL h); BOOL WINAPI SaveDIB (HDIB hDib, CFile& file); HDIB WINAPI ReadDIBFile(CFile& file); HDIB WINAPI NewDIB(long width, long height, unsigned short biBitCount= 0); //add void WINAPI ConvertShort(unsigned short *array, long length); void WINAPI ConvertLong(unsigned long *array, long length);

原tab控件，仿360开关控件版权归原作者! VB控件背景透明代码来自：新浪 “玄雨清风”的博客感谢以上两位源代码作者链接:http://pan.baidu.com/s/1hrAEXqG 密码:nfhc '-----------------------以下是转自博客的控件透明源代码(可透明至父窗体或桌面)------------- '添加一个用户控件UserControl,代如下： Option Explicit '实现用户控件UserControl的"伪透明" Private Type POINTAPI X As Long Y As Long End Type Private Type RECT Left As Long Top As Long Right As Long Bottom As Long End Type Private Declare Function GetDC Lib "user32" (ByVal hwnd As Long) As Long Private Declare Function ReleaseDC Lib "user32" (ByVal hwnd As Long, ByVal hDC As Long) As Long Private Declare Function BitBlt Lib "gdi32" (ByVal hDestDC As Long, ByVal X As Long, ByVal Y As Long, ByVal nWidth As Long, ByVal nHeight As Long, ByVal hSrcDC As Long, ByVal xSrc As Long, ByVal ySrc As Long, ByVal dwRop As Long) As Long Private Declare Function GetWindowRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long Private Declare Function ScreenToClient Lib "user32" (ByVal hwnd As Long, lpPoint As POINTAPI) As Long Private Declare Function ShowWindow Lib "user32" (ByVal hwnd As Long, ByVal nCmdShow As Long) As Long Private Declare Function GetClientRect Lib "user32" (ByVal hwnd As Long, lpRect As RECT) As Long Private Declare Function CreateCompatibleBitmap Lib "gdi32" (ByVal hDC As Long, ByVal nWidth As Long, ByVal nHeight As Long) As Long Private Declare Function CreateCompatibleDC Lib "gdi32" (ByVal hDC As Long) As Long Private Declare Function SelectObject Lib "gdi32" (ByVal hDC As Long, ByVal hObject As Long) As Long Private Declare Function DeleteDC Lib "gdi32" (ByVal hDC As Long) As Long Private Declare Function DeleteObject Lib "gdi32" (ByVal hObject As Long) As Long Private Declare Function SendMessage Lib "user32" Alias "SendMessageA" (ByVal hwnd As Long, ByVal wMsg As Long, ByVal wParam As Long, lParam As Any) As Long Private Const WM_ERASEBKGND = &H14 Private Const WM_PAINT = &HF Private Const SRCCOPY = &HCC0020 ' (DWORD) dest = source Public Event MouseDown(Button As Integer, Shift As Integer, X A

一、窗口函数（Window） = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = = AdjustWindowRect 函数功能：该函数依据所需客户矩形的大小，计算需要的窗日矩形的大小。计算出的窗口矩形随后可以传递给CreateWindow函数，用于创建一个客户区所需大小的窗口。函数原型：BOOL AdjustWindowRect（LPRECT lpRect ，DWORD dwStyle，BOOL bMENU）；参数： lpRect：指向RECT结构的指针，该结构包含所需客户区域的左上角和右下角的坐标。函数返回时，该结构容纳所需客户区域的窗口的左上角和右下角的坐标。 dwStyle：指定将被计算尺寸的窗口的窗口风格。 bMenu：指示窗口是否有菜单。返回值：如果函数成功，返回值为非零；如果函数失败，返回值为零。获取错误信息，参看GetLastError。备注：客户矩形是指完全包含一个客户区域的最小矩形；窗日矩形是指完全包含一个窗口的最小矩形，该窗口包含客户区与非客户区。当一个菜单条下拉出两行或更多行时，AdjustWindowRect函数不增加额外的空间。速查：Windows NT：3.1以上版本：Windows：95以上版本：Windows CE：不支持；头文件：winuser.h；库文件：user32.lib。 ......