static LRESULT CALLBACK cliprdr_proc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam) { static wfClipboard* clipboard = NULL; switch (Msg) { case WM_CREATE: DEBUG_CLIPRDR("info: WM_CREATE"); clipboard = (wfClipboard*)((CREATESTRUCT*) lParam)->lpCreateParams; if (!AddClipboardFormatListener(hWnd)) { DEBUG_CLIPRDR("error: AddClipboardFormatListener failed with %#x.", GetLastError()); } clipboard->hwnd = hWnd; break; case WM_CLOSE: DEBUG_CLIPRDR("info: WM_CLOSE"); RemoveClipboardFormatListener(hWnd); break; case WM_CLIPBOARDUPDATE: DEBUG_CLIPRDR("info: WM_CLIPBOARDUPDATE"); if (clipboard->sync) { if ((GetClipboardOwner() != clipboard->hwnd) && (S_FALSE == OleIsCurrentClipboard(clipboard->data_obj))) { if (clipboard->hmem) { GlobalFree(clipboard->hmem); clipboard->hmem = NULL; } cliprdr_send_format_list(clipboard); } } break; case WM_RENDERALLFORMATS: DEBUG_CLIPRDR("info: WM_RENDERALLFORMATS"); /* discard all contexts in clipboard */ if (!OpenClipboard(clipboard->hwnd)) { DEBUG_CLIPRDR("OpenClipboard failed with 0x%x", GetLastError()); break; } EmptyClipboard(); CloseClipboard(); break; case WM_RENDERFORMAT: DEBUG_CLIPRDR("info: WM_RENDERFORMAT"); if (cliprdr_send_data_request(clipboard, (UINT32) wParam) != 0) { DEBUG_CLIPRDR("error: cliprdr_send_data_request failed."); break; } if (!SetClipboardData((UINT) wParam, clipboard->hmem)) { DEBUG_CLIPRDR("SetClipboardData failed with 0x%x", GetLastError()); if (clipboard->hmem) { GlobalFree(clipboard->hmem); clipboard->hmem = NULL; } } /* Note: GlobalFree() is not needed when success */ break; case WM_CLIPRDR_MESSAGE: DEBUG_CLIPRDR("info: WM_CLIPRDR_MESSAGE"); switch (wParam) { case OLE_SETCLIPBOARD: DEBUG_CLIPRDR("info: OLE_SETCLIPBOARD"); if (wf_create_file_obj(clipboard, &clipboard->data_obj)) { if (OleSetClipboard(clipboard->data_obj) != S_OK) { wf_destroy_file_obj(clipboard->data_obj); clipboard->data_obj = NULL; } } break; default: break; } break; case WM_DESTROYCLIPBOARD: case WM_ASKCBFORMATNAME: case WM_HSCROLLCLIPBOARD: case WM_PAINTCLIPBOARD: case WM_SIZECLIPBOARD: case WM_VSCROLLCLIPBOARD: default: return DefWindowProc(hWnd, Msg, wParam, lParam); } return 0; }
static LRESULT CALLBACK cliprdr_proc(HWND hWnd, UINT Msg, WPARAM wParam, LPARAM lParam) { static cliprdrContext *cliprdr = NULL; switch (Msg) { case WM_CREATE: cliprdr = (cliprdrContext *)((CREATESTRUCT *)lParam)->lpCreateParams; cliprdr->hwndNextViewer = SetClipboardViewer(hWnd); if (cliprdr->hwndNextViewer == NULL && GetLastError() != 0) { DEBUG_CLIPRDR("error: SetClipboardViewer failed with 0x%0x.", GetLastError()); } cliprdr->hwndClipboard = hWnd; break; case WM_CLOSE: ChangeClipboardChain(hWnd, cliprdr->hwndNextViewer); break; case WM_CHANGECBCHAIN: if (cliprdr->hwndNextViewer == (HWND)wParam) { cliprdr->hwndNextViewer = (HWND)lParam; } else if (cliprdr->hwndNextViewer != NULL) { SendMessage(cliprdr->hwndNextViewer, Msg, wParam, lParam); } break; case WM_DRAWCLIPBOARD: if (cliprdr->channel_initialized) { if ((GetClipboardOwner() != cliprdr->hwndClipboard) && (S_FALSE == OleIsCurrentClipboard(cliprdr->data_obj))) { if (!cliprdr->hmem) { cliprdr->hmem = GlobalFree(cliprdr->hmem); } cliprdr_send_format_list(cliprdr); } } if (cliprdr->hwndNextViewer != NULL && cliprdr->hwndNextViewer != hWnd) SendMessage(cliprdr->hwndNextViewer, Msg, wParam, lParam); break; case WM_RENDERALLFORMATS: /* discard all contexts in clipboard */ if (!OpenClipboard(cliprdr->hwndClipboard)) { DEBUG_CLIPRDR("OpenClipboard failed with 0x%x", GetLastError()); break; } EmptyClipboard(); CloseClipboard(); break; case WM_RENDERFORMAT: if (cliprdr_send_data_request(cliprdr, (UINT32)wParam) != 0) { DEBUG_CLIPRDR("error: cliprdr_send_data_request failed."); break; } if (SetClipboardData((UINT) wParam, cliprdr->hmem) == NULL) { DEBUG_CLIPRDR("SetClipboardData failed with 0x%x", GetLastError()); cliprdr->hmem = GlobalFree(cliprdr->hmem); } /* Note: GlobalFree() is not needed when success */ break; case WM_CLIPRDR_MESSAGE: switch (wParam) { case OLE_SETCLIPBOARD: if (wf_create_file_obj(cliprdr, &cliprdr->data_obj)) if (OleSetClipboard(cliprdr->data_obj) != S_OK) wf_destroy_file_obj(cliprdr->data_obj); break; default: break; } break; case WM_CLIPBOARDUPDATE: case WM_DESTROYCLIPBOARD: case WM_ASKCBFORMATNAME: case WM_HSCROLLCLIPBOARD: case WM_PAINTCLIPBOARD: case WM_SIZECLIPBOARD: case WM_VSCROLLCLIPBOARD: default: return DefWindowProc(hWnd, Msg, wParam, lParam); } return 0; }