1. 调用OpenClipboard打开剪帖板
2. 调用EmptyClipboard清空剪贴板
3. 调用SetClipboardData提供程序数据
4. 调用CloseClipboard关闭剪贴板
GlobalAlloc 函数在全局堆上分配内存, 指定GMEM_MOVEABLE使其可移动到默认堆.
#include
#include
#define ID_COPY 150
#define ID_PASTE 151
#define ID_TEXT 152
#define ID_VIEW 153
#define HK_CTRL_C 1
#define MAX_STRING 1024
LPWORD lpwAlign(LPWORD lpIn)
{
ULONG ul;
ul = (ULONG)lpIn;
ul +=3;
ul >>=2;
ul <<=2;
return (LPWORD)ul;
}
void CopyStringToChilpboard(HWND hwnd, LPCSTR lpString)
{
if (lpString == NULL)
return;
size_t size = strlen(lpString) + 1;
HGLOBAL hglb = GlobalAlloc(GHND, size);
if (hglb == NULL) return;
LPSTR buffer = (LPSTR)GlobalLock(hglb);
if (buffer)
{
strcpy(buffer, lpString);
GlobalUnlock(hglb);
if (OpenClipboard(hwnd))
{
EmptyClipboard();
SetClipboardData(CF_TEXT, hglb);
CloseClipboard();
}
}
}
BOOL PasteStringFromChilpboard(HWND hwnd, LPSTR lpString, LPDWORD lpSize)
{
BOOL fOk = FALSE;
if (IsClipboardFormatAvailable(CF_TEXT))
{
if (OpenClipboard(hwnd))
{
HGLOBAL hglb = GetClipboardData(CF_TEXT);
if (hglb)
{
LPCSTR buffer = (LPCSTR)GlobalLock(hglb);
if (buffer && lpSize)
{
DWORD size = strlen(buffer) + 1;
if (size <= *lpSize && lpString)
strcpy(lpString, buffer);
*lpSize = size;
GlobalUnlock(hglb);
fOk = TRUE;
}
}
CloseClipboard();
}
}
return fOk;
}
INT_PTR CALLBACK DialogProc(HWND hwndDlg, UINT uMsg, WPARAM wParam, LPARAM lParam)
{
char buffer[MAX_STRING] = {0};
DWORD length = MAX_STRING;
switch (uMsg)
{
case WM_INITDIALOG:
RegisterHotKey(hwndDlg, HK_CTRL_C, MOD_CONTROL, 0x43); /* handle Ctrl+C */
return TRUE;
case WM_COMMAND:
switch (LOWORD(wParam))
{
case IDCANCEL:
UnregisterHotKey(hwndDlg, HK_CTRL_C);
EndDialog(hwndDlg, wParam);
return TRUE;
case ID_PASTE:
PasteStringFromChilpboard(hwndDlg, buffer, &length);
SetDlgItemTextA(hwndDlg, ID_VIEW, buffer);
return TRUE;
case ID_COPY:
GetDlgItemTextA(hwndDlg, ID_TEXT, buffer, MAX_STRING);
CopyStringToChilpboard(hwndDlg, buffer);
return TRUE;
}
break;
case WM_HOTKEY:
if (wParam == HK_CTRL_C &&
HIWORD(lParam) == 0x43 &&
LOWORD(lParam) == MOD_CONTROL)
{
GetDlgItemTextA(hwndDlg, ID_TEXT, buffer, MAX_STRING);
CopyStringToChilpboard(hwndDlg, buffer);
return TRUE;
}
break;
}
return FALSE;
}
LPWORD DefineStaticText(LPWORD lpw, WORD id, LPCSTR msg, short x, short y, short width, short height)
{
LPDLGITEMTEMPLATE lpdit;
lpw = lpwAlign(lpw); /* align DLGITEMTEMPLATE _disibledevent=> lpdit->x = x;
lpdit->y = y;
lpdit->cx = width;
lpdit->cy = height;
lpdit->id = id; /* text identifier */
lpdit->style = WS_CHILD | WS_VISIBLE | SS_LEFT;
lpw = (LPWORD)(lpdit + 1);
*lpw++ = 0xFFFF;
*lpw++ = 0x0082; /* static class */
LPWSTR lpwsz = (LPWSTR)lpw;
int nchar = MultiByteToWideChar(CP_ACP, 0, msg, -1, lpwsz, strlen(msg) + 1);
lpw += nchar;
*lpw++ = 0; /* no creation data */
return lpw;
}
LPWORD DefineEdit(LPWORD lpw, WORD id, LPCSTR caption, short x, short y, short width, short height, DWORD styles)
{
LPDLGITEMTEMPLATE lpdit;
lpw = lpwAlign(lpw); /* align DLGITEMTEMPLATE _disibledevent=> lpdit->x = x;
lpdit->y = y;
lpdit->cx = width;
lpdit->cy = height;
lpdit->id = id; /* text identifier */
lpdit->style = ES_LEFT | WS_BORDER | WS_TABSTOP | WS_CHILD | WS_VISIBLE | styles ;
lpw = (LPWORD) (lpdit + 1);
*lpw++ = 0xFFFF;
*lpw++ = 0x0081; /* edit class */
LPWSTR lpwsz = (LPWSTR)lpw;
int nchar = MultiByteToWideChar(CP_ACP, 0, caption, -1, lpwsz, 50);
lpw += nchar;
*lpw++ = 0; /* no creation data */
return lpw;
}
LPWORD DefineButton(LPWORD lpw, WORD id, LPCSTR caption, short x, short y, short width, short height)
{
LPDLGITEMTEMPLATE lpdit;
lpw = lpwAlign(lpw); /* align DLGITEMTEMPLATE _disibledevent=> lpdit->x = x;
lpdit->y = y;
lpdit->cx = width;
lpdit->cy = height;
lpdit->id = id;
lpdit->style = WS_CHILD | WS_VISIBLE | BS_DEFPUSHBUTTON;
lpw = (LPWORD)(lpdit + 1);
*lpw++ = 0xFFFF;
*lpw++ = 0x0080; /* button class */
LPWSTR lpwsz = (LPWSTR)lpw;
int nchar = MultiByteToWideChar(CP_ACP, 0, caption, -1, lpwsz, 50);
lpw += nchar;
*lpw++ = 0; /* no creation data */
return lpw;
}
/*
* Define a dialog box.
*/
LPWORD DefineDialog(LPWORD lpw, WORD cdit, LPCSTR caption, short x, short y, short width, short height)
{
LPDLGTEMPLATE lpdt;
lpw = lpwAlign(lpw); /* align DLGITEMTEMPLATE _disibledevent=> lpdt->style = WS_POPUP | WS_BORDER | WS_SYSMENU | DS_MODALFRAME | WS_CAPTION;
lpdt->x = x;
lpdt->y = y;
lpdt->cx = width;
lpdt->cy = height;
lpdt->cdit = cdit; /* number of controls */
lpw = (LPWORD)(lpdt + 1);
*lpw++ = 0; /* no menu */
*lpw++ = 0; /* predefined dialog box class (by default) */
LPWSTR lpwsz = (LPWSTR)lpw;
int nchar = MultiByteToWideChar(CP_ACP, 0, caption, -1, lpwsz, 50);
lpw += nchar;
return lpw;
}
int CALLBACK WinMain(HINSTANCE hInst, HINSTANCE hPreInst, LPSTR lpCmdLine, int nShowCmd)
{
HGLOBAL hgbl = GlobalAlloc(GMEM_ZEROINIT, 1024);
int ret = -1;
if (hgbl == NULL)
return -1;
LPWORD lpw = (LPWORD)GlobalLock(hgbl);
if (lpw)
{
lpw = DefineDialog(lpw, 4, "Chilpboard Sample", 10, 10, 200, 190);
lpw = DefineButton(lpw, ID_PASTE, "Paste", 110, 160, 80, 15);
lpw = DefineButton(lpw, ID_COPY, "Copy", 10, 160, 80, 15);
lpw = DefineEdit(lpw, ID_TEXT, "Source", 10, 10, 90, 140, ES_MULTILINE);
lpw = DefineEdit(lpw, ID_VIEW, "Destination", 100, 10, 90, 140, ES_MULTILINE|ES_READONLY);
GlobalUnlock(hgbl);
ret = DialogBoxIndirect(hInst, (LPDLGTEMPLATE)hgbl, NULL, (DLGPROC)DialogProc);
if (ret == -1)
{
char error[50] = {0};
sprintf(error, "Create dialog failed. (%d)\n", GetLastError());
OutputDebugStringA(error);
}
GlobalFree(hgbl);
}
return ret;
}
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