好的，所以我正在用 C++ 编写这个程序，它应该将剪贴板文本附加到自动剪贴板选项卡内的编辑控件中。我已经设置了程序，以便它支持 unicode 文本。
当我在程序外复制文本时，程序会正确附加文本。但是，如果我复制来自程序的文本，它会向我显示好像它正在复制需要转换为 int unicode 的 ansi 字符。
我不确定问题是来自编辑控件还是来自剪贴板。编辑控件输出不是 unicode 格式吗？还是剪贴板复制为ansi并粘贴为unicode？
编辑：所以我发现根据 MSDN 文档，编辑控件中的 WM_COPY 是在 CF_TEXT 模式下处理的，而不是剪贴板的 CF_UNICODETEXT：http: //msdn.microsoft.com/en-us/library/windows/desktop/ms649022( v=vs.85).aspx
因此，我从我的 AutoClipboardEdit 控件开始添加了一些子类，但由于某种原因，我在 WM_DRAWCLIPBOARD 消息上收到了损坏的堆错误。所以我被困在那里：
Edit2：我通过不释放剪贴板上使用的文本字符串的分配内存来使其工作。在这种情况下，变量的名称是 hMem2。似乎如果我释放 hMem2，程序会因“堆损坏”错误而崩溃。我的猜测是操作系统本身管理和释放内存。这似乎是可能的，因为数据的 SetClipboardData 参数是一个指针。我还尝试通过将 WM_COPY 消息发送到无限循环中来测试内存是否真的泄漏，以查看堆是否会永远增加；但到目前为止似乎并非如此。
所以，我需要有人向我确认没有内存泄漏，或者操作系统确实相应地管理和释放剪贴板。
这是完整的源代码：
#define UNICODE
#define _UNICODE
#pragma comment(linker,"\"/manifestdependency:type='win32' \
name='Microsoft.Windows.Common-Controls' version='6.0.0.0' \
processorArchitecture='*' publicKeyToken='6595b64144ccf1df' language='*'\"")
#pragma comment(lib, "Comctl32.lib")
#include <tchar.h>
#include <Windows.h>
#include <CommCtrl.h>
#include <sstream>
using namespace std;
TCHAR temp[1024];
enum TabIndexes
{
ID_ReadingPageTab,
ID_AutoClipboardTab
};
enum WindowControls
{
ID_SelectAll,
ID_TabControls,
ID_ReadingPageEdit,
ID_AutoClipboardEdit,
ID_AutoClipboardCheckbox,
ID_AutoReadCheckbox,
ID_AutoClearCheckbox,
ID_ReadPauseResumeButton,
ID_StopButton
};
//***************Global Variables***************
HWND MainWindowHandle;
HWND ClipboardViewer;
HWND TabControls;
HWND ReadingPageEdit;
HWND AutoClipboardEdit;
HWND AutoClipboardCheckbox;
HWND AutoReadCheckbox;
HWND AutoClearCheckbox;
HWND ReadPauseResumeButton;
HWND StopButton;
RECT WindowReactangle;
RECT EditControlsDimension;
HACCEL SelectAll;
int Textlength;
void ShowReport()
{
LPTSTR ErrorText = NULL;
FormatMessage
(
FORMAT_MESSAGE_ALLOCATE_BUFFER |
FORMAT_MESSAGE_FROM_SYSTEM |
FORMAT_MESSAGE_IGNORE_INSERTS, //dwFlags
NULL, //lpSource
GetLastError(), //dwMessageId
MAKELANGID(LANG_NEUTRAL, SUBLANG_DEFAULT), //dwLanguageId
(LPTSTR)&ErrorText, //lpBuffer
0, //nSize
NULL //*Arguments
);
MessageBox(NULL, ErrorText, TEXT("Last Error:"), MB_OK);
}
void OutputBox(LPTSTR OutputText)
{
MessageBox(NULL, OutputText, _T("WARNING!!!"), MB_OK);
}
WNDPROC OldProc;
LRESULT CALLBACK EditControl
(
HWND hwnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam
)
{
WPARAM StartOfSelectection;
LPARAM EndOfSelection;
int SelectionSize;
int TextSize;
TCHAR* hMem1;
TCHAR* hMem2;
if (uMsg == WM_COPY)
{
OpenClipboard(NULL);
SendMessage(hwnd, EM_GETSEL, (WPARAM)&StartOfSelectection, (LPARAM)&EndOfSelection);
SelectionSize = EndOfSelection - StartOfSelectection + 1;
TextSize = SendMessage(hwnd, WM_GETTEXTLENGTH, 0, 0);
TextSize -= (TextSize - EndOfSelection - 1);
hMem1 = new TCHAR[TextSize]();
ZeroMemory(hMem1, TextSize*sizeof(TCHAR));
SendMessage(hwnd, WM_GETTEXT, TextSize, (LONG)hMem1);
hMem2 = new TCHAR[SelectionSize]();
ZeroMemory(hMem2, SelectionSize*sizeof(TCHAR));
for(int Index=0; StartOfSelectection<EndOfSelection; ++StartOfSelectection)
hMem2[Index++] = hMem1[StartOfSelectection];
SetClipboardData(CF_UNICODETEXT, (HANDLE)hMem2);
CloseClipboard();
delete[] hMem1;
//delete[] hMem2;
}
return OldProc(hwnd, uMsg, wParam, lParam);
}
void CreateControls(HWND hWndParent)
{
GetClientRect(hWndParent, &WindowReactangle);
const INITCOMMONCONTROLSEX CommonControls = {sizeof(INITCOMMONCONTROLSEX), ICC_TAB_CLASSES};
InitCommonControlsEx(&CommonControls);
TabControls = CreateWindow
(
WC_TABCONTROL, //lpClassName
NULL, //lpWindowName
WS_VISIBLE | WS_CHILD, //dwStyle
WindowReactangle.left, //x
WindowReactangle.top, //y
WindowReactangle.right, //nWidth
WindowReactangle.bottom - 100, //nHeight
hWndParent, //hWndParent
(HMENU)ID_TabControls, //hMenu
NULL, //hInstance
NULL //lpParam
);
TCITEM TabItemStructure = {0};
TabItemStructure.mask = TCIF_TEXT;
TabItemStructure.pszText = _T("Reading Page");
SendMessage(TabControls, TCM_INSERTITEM, ID_ReadingPageTab, (LPARAM)&TabItemStructure);
TabItemStructure.pszText = _T("Auto-Clipboard");
SendMessage(TabControls, TCM_INSERTITEM, ID_AutoClipboardTab, (LPARAM)&TabItemStructure);
ACCEL AcceleratorStructure;
AcceleratorStructure.fVirt = FCONTROL | FVIRTKEY;
AcceleratorStructure.key = 0x41;
AcceleratorStructure.cmd = ID_SelectAll;
SelectAll = CreateAcceleratorTable(&AcceleratorStructure, 1);
ReadingPageEdit = CreateWindow
(
_T("EDIT"), //lpClassName
NULL, //lpWindowName
WS_VISIBLE | WS_CHILD | WS_VSCROLL | WS_BORDER | ES_MULTILINE, //dwStyle
5, //x
30, //y
WindowReactangle.right - 10, //nWidth
WindowReactangle.bottom - 135, //nHeight
TabControls, //hWndParent
(HMENU)ID_ReadingPageEdit, //hMenu
NULL, //hInstance
NULL //lpParam
);
AutoClipboardEdit = CreateWindow
(
_T("EDIT"), //lpClassName
NULL, //lpWindowName
WS_CHILD | WS_VSCROLL | WS_BORDER | ES_MULTILINE, //dwStyle
5, //x
30, //y
WindowReactangle.right - 10, //nWidth
WindowReactangle.bottom - 135, //nHeight
TabControls, //hWndParent
(HMENU)ID_AutoClipboardEdit, //hMenu
NULL, //hInstance
NULL //lpParam
);
AutoClipboardCheckbox = CreateWindow
(
_T("BUTTON"), //lpClassName
_T("Auto-Clipboard"), //lpWindowName
BS_AUTOCHECKBOX | WS_VISIBLE | WS_CHILD, //dwStyle
10, //x
WindowReactangle.bottom -100 +10, //y
150, //nWidth
25, //nHeight
hWndParent, //hWndParent
(HMENU)ID_AutoClipboardCheckbox, //hMenu
NULL, //hInstance
NULL //lpParam
);
SendMessage(AutoClipboardCheckbox, BM_CLICK, TRUE, 0);
OldProc = (WNDPROC)SetWindowLongPtr(AutoClipboardEdit, GWLP_WNDPROC, (LONG)EditControl);
AutoReadCheckbox = CreateWindow
(
_T("BUTTON"), //lpClassName
_T("Auto-Read"), //lpWindowName
BS_AUTOCHECKBOX | WS_VISIBLE | WS_CHILD, //dwStyle
10, //x
WindowReactangle.bottom -100 +35, //y
150, //nWidth
25, //nHeight
hWndParent, //hWndParent
(HMENU)ID_AutoReadCheckbox, //hMenu
NULL, //hInstance
NULL //lpParam
);
AutoClearCheckbox = CreateWindow
(
_T("BUTTON"), //lpClassName
_T("Auto-Clear"), //lpWindowName
BS_AUTOCHECKBOX | WS_VISIBLE | WS_CHILD, //dwStyle
10, //x
WindowReactangle.bottom -100 +60, //y
150, //nWidth
25, //nHeight
hWndParent, //hWndParent
(HMENU)ID_AutoReadCheckbox, //hMenu
NULL, //hInstance
NULL //lpParam
);
}
LRESULT WINAPI MainWindowProcedure
(
HWND hwnd,
UINT uMsg,
WPARAM wParam,
LPARAM lParam
)
{
switch(uMsg)
{
//Clipboard Events
case WM_CHANGECBCHAIN:
if ((HWND)wParam == ClipboardViewer)
ClipboardViewer = (HWND)lParam;
return 0;
case WM_DRAWCLIPBOARD:
OpenClipboard(NULL);
SendMessage(AutoClipboardEdit, EM_SETSEL, (WPARAM)-1, (LPARAM)-1);
SendMessage(AutoClipboardEdit, EM_REPLACESEL, 0, (LPARAM)GetClipboardData(CF_UNICODETEXT)); //CF_TEXT //CF_UNICODETEXT
CloseClipboard();
break;
//Window Controls Events
case WM_COMMAND:
switch (LOWORD(wParam))
{
case ID_SelectAll:
if (HIWORD(wParam)==1)
SendMessage(GetFocus(), EM_SETSEL, (WPARAM)0, (LPARAM)-1);
break;
case ID_AutoClipboardCheckbox:
if (SendMessage(AutoClipboardCheckbox, BM_GETCHECK, 0, 0) == BST_CHECKED)
ClipboardViewer = SetClipboardViewer(hwnd);
else
ChangeClipboardChain(hwnd, ClipboardViewer);
break;
}
return 0;
//Tab Controls Events
case WM_NOTIFY:
if (SendMessage(TabControls, TCM_GETCURSEL, 0, 0))
{
ShowWindow(ReadingPageEdit, SW_HIDE);
ShowWindow(AutoClipboardEdit, SW_SHOW);
} else
{
ShowWindow(AutoClipboardEdit, SW_HIDE);
ShowWindow(ReadingPageEdit, SW_SHOW);
}
break;
//Main Window Events
case WM_SIZE:
{
int LOPARAM = lParam & 0xFFFF;
int HIPARAM = lParam >> 16;
SetWindowPos(TabControls, NULL, 0, 0, LOPARAM, HIPARAM-100, SWP_DRAWFRAME);
SetWindowPos(ReadingPageEdit, NULL, 5, 30, LOPARAM-10, HIPARAM-100-35, SWP_DRAWFRAME);
SetWindowPos(AutoClipboardEdit, NULL, 5, 30, LOPARAM-10, HIPARAM-100-35, SWP_DRAWFRAME);
SetWindowPos(AutoClipboardCheckbox, NULL, 10, HIPARAM-100+10, 150, 25, SWP_DRAWFRAME);
SetWindowPos(AutoReadCheckbox, NULL, 10, HIPARAM-100+35, 150, 25, SWP_DRAWFRAME);
SetWindowPos(AutoClearCheckbox, NULL, 10, HIPARAM-100+60, 150, 25, SWP_DRAWFRAME);
return 0;
}
case WM_CREATE:
CreateControls(hwnd);
return 0;
case WM_DESTROY:
DestroyAcceleratorTable(SelectAll);
ChangeClipboardChain(hwnd, ClipboardViewer);
PostQuitMessage(ERROR_SUCCESS);
return 0;
}
return DefWindowProc(hwnd, uMsg, wParam, lParam);
}
void CreateMainWindow()
{
WNDCLASSEX WindowClassStructure;
WindowClassStructure.cbSize = sizeof(WNDCLASSEX);
WindowClassStructure.style = CS_HREDRAW | CS_VREDRAW;
WindowClassStructure.lpfnWndProc = MainWindowProcedure;
WindowClassStructure.cbClsExtra = 0;
WindowClassStructure.cbWndExtra = 0;
WindowClassStructure.hInstance = NULL;
WindowClassStructure.hIcon = LoadIcon(NULL, IDI_INFORMATION);
WindowClassStructure.hCursor = LoadCursor(NULL, IDC_ARROW);
WindowClassStructure.hbrBackground = (HBRUSH)(COLOR_BTNFACE + 1);
WindowClassStructure.lpszMenuName = NULL;
WindowClassStructure.lpszClassName = _T("MainClass");
WindowClassStructure.hIconSm = LoadIcon(NULL, IDI_INFORMATION);
RegisterClassEx(&WindowClassStructure);
MainWindowHandle = CreateWindow
(
_T("MainClass"), //lpClassName
_T("Clipboard Reader"), //lpWindowName
WS_VISIBLE | WS_OVERLAPPEDWINDOW, //dwStyle
CW_USEDEFAULT, //x
CW_USEDEFAULT, //y
640, //nWidth
480, // nHeight
NULL, //hWndParent
NULL, //hMenu
NULL, //hInstance
NULL //lpParam
);
}
int WINAPI _tWinMain
(
HINSTANCE hInstance,
HINSTANCE hPrevInstance,
LPTSTR lpCmdLine,
int nCmdShow
)
{
CreateMainWindow();
MSG MessageStructure = {0};
while(MessageStructure.message != WM_QUIT)
{
if (PeekMessage(&MessageStructure, NULL, 0, 0, PM_REMOVE))
{
if (!TranslateAccelerator(MainWindowHandle, SelectAll, &MessageStructure))
{
TranslateMessage(&MessageStructure);
DispatchMessage(&MessageStructure);
}
}
}
return MessageStructure.wParam;
}