GetClipboardData() 函数的第一个参数问题

[ximenchuifeng]

#include <windows.h>
#define UNICODE

LRESULT CALLBACK WndProc (HWND, UINT, WPARAM, LPARAM);

int WINAPI WinMain (HINSTANCE hInstance, HINSTANCE hPrevInstance, PSTR szCmdLine, int iCmdShow)
{
    static TCHAR szAppName[] = TEXT ("ClipView");
    HWND         hwnd;
    MSG          msg;
    WNDCLASS     wndclass;

    wndclass.style         = CS_HREDRAW | CS_VREDRAW;
    wndclass.lpfnWndProc   = WndProc;
    wndclass.cbClsExtra    = 0;
    wndclass.cbWndExtra    = 0;
    wndclass.hInstance     = hInstance;
    wndclass.hIcon         = LoadIcon (NULL, IDI_APPLICATION);
    wndclass.hCursor       = LoadCursor (NULL, IDC_ARROW);
    wndclass.hbrBackground = (HBRUSH) GetStockObject (WHITE_BRUSH);
    wndclass.lpszMenuName  = NULL;
    wndclass.lpszClassName = szAppName;

    if (!RegisterClass (&wndclass))
    {
        MessageBox (NULL, TEXT ("This program requires Windows NT!"), 
                    szAppName, MB_ICONERROR);
        return 0;
    }
     
    hwnd = CreateWindow (szAppName,                  // window class name
                         TEXT ("Simple Clip Viewer (Text Only)"), // window caption
                         WS_OVERLAPPEDWINDOW,        // window style
                         CW_USEDEFAULT,              // initial x position
                         CW_USEDEFAULT,              // initial y position
                         CW_USEDEFAULT,              // initial x size
                         CW_USEDEFAULT,              // initial y size
                         NULL,                       // parent window handle
                         NULL,                       // window menu handle
                         hInstance,                  // program instance handle
                         NULL);                     // creation parameters
     
    ShowWindow (hwnd, iCmdShow);
    UpdateWindow (hwnd);
     
    while (GetMessage (&msg, NULL, 0, 0))
    {
        TranslateMessage (&msg);
        DispatchMessage (&msg);
    }
    return msg.wParam;
}

LRESULT CALLBACK WndProc (HWND hwnd, UINT message, WPARAM wParam, LPARAM lParam)
{
	static HWND	hwndNextViewer;
	PTSTR		pGlobal;
	HGLOBAL		hGlobal;
    HDC         hdc;
    PAINTSTRUCT ps;
    RECT        rect;
     
    switch (message)
    {
    case WM_CREATE:

		hwndNextViewer = SetClipboardViewer (hwnd);
        return (0);

	case WM_CHANGECBCHAIN:
		if ((HWND) wParam == hwndNextViewer)
		{
			hwndNextViewer = (HWND) lParam;
		}
		else
			if (hwndNextViewer)
			{
				SendMessage (hwndNextViewer, message, wParam, lParam);
			}
		return (0);

	case WM_DRAWCLIPBOARD:
		if (hwndNextViewer)
		{
			SendMessage (hwndNextViewer, message, wParam, lParam);
		}
		InvalidateRect (hwnd, NULL, TRUE);
		return (0);
          
    case WM_PAINT:
        hdc = BeginPaint (hwnd, &ps);     
        GetClientRect (hwnd, &rect);
      
		OpenClipboard (hwnd);
		hGlobal = GetClipboardData (CF_TEXT); //这里的疑问，MSDN中说 CF_TEXT 是ANSI CF_UNICODETEXT是 UNICODE， 但是这个程序偏偏要使用 CF_TEXT 偏偏能显示中文.....而CF_UNICODETEXT 只能显示错误的

		
		if (hGlobal != NULL)
		{
			pGlobal = (PTSTR) GlobalLock (hGlobal);
			DrawText (hdc, pGlobal, -1, &rect, DT_EXPANDTABS);
			GlobalUnlock (hGlobal);
		}
        CloseClipboard ();
        EndPaint (hwnd, &ps);
        return (0);
          
    case WM_DESTROY:
		ChangeClipboardChain (hwnd, hwndNextViewer);
        PostQuitMessage (0) ;
        return (0);
    }
    return DefWindowProc (hwnd, message, wParam, lParam);
}

问题在注释中。。。

对编码一直有中疑惑。。。TXT文档 保存有 ANSI 类型，为什么能够显示类型，不是说ANSI 才8位嘛。。。

[Eleven]

一个ASNI编码的字符显示不了，难道两个还显示不了？？

[ximenchuifeng]

cf_text 可以正确显示 中文和英文，但是 cf_unicodetext 不能正确显示。。

我的疑问是：在我映像当中 ansi编码才 8位，不能存储中文，但是这里面 cf_text却能够显示中文，而unicodetext却不能。。。

[gaoxiaowei]

CF_TEXT :文本格式
CF_UNICODETEXT Windows NT/2000/XP: Unicode text format. Each line ends with a carriage return/linefeed (CR-LF) combination. A null character signals the end of the data.