305 lines
7.1 KiB
C
305 lines
7.1 KiB
C
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/*******************************************************************************
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*
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* (C) COPYRIGHT MICROSOFT CORP., 1993-1994
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*
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* TITLE: REGDRAG.C
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*
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* VERSION: 4.01
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*
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* AUTHOR: Tracy Sharpe
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*
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* DATE: 05 Mar 1994
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*
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* Drag and drop routines for the Registry Editor.
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*
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********************************************************************************
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*
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* CHANGE LOG:
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*
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* DATE REV DESCRIPTION
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* ----------- --- -------------------------------------------------------------
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* 05 Mar 1994 TCS Original implementation.
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*
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*******************************************************************************/
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#include "pch.h"
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#include "regedit.h"
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typedef struct _REGDRAGDRATA {
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POINT DragRectPoint;
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POINT HotSpotPoint;
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HWND hLockWnd;
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PRECT pDragRectArray;
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int DragRectCount;
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} REGDRAGDATA;
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REGDRAGDATA s_RegDragData;
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VOID
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PASCAL
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DrawDragRects(
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VOID
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);
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/*******************************************************************************
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*
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* RegEdit_DragObjects
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*
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* DESCRIPTION:
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*
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* PARAMETERS:
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* hWnd, handle of RegEdit window.
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* hSourceWnd, handle of window initiating the drag.
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* hDragImageList, image used during drag operation, assumed to be at image
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* index 0. May be NULL if pDragRectArray is valid.
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* pDragRectArray, array of rectangles to draw during drag operation. May
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* be NULL if hDragImageList is valid.
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* DragRectCount, number of rectangles pointed to be pDragRectArray.
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* HotSpotPoint, offset of the cursor hotpoint relative to the image.
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*
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*******************************************************************************/
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VOID
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PASCAL
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RegEdit_DragObjects(
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HWND hWnd,
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HIMAGELIST hDragImageList,
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PRECT pDragRectArray,
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int DragRectCount,
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POINT HotSpotPoint
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)
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{
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RECT CurrentDropRect;
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HCURSOR hDropCursor;
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HCURSOR hNoDropCursor;
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HCURSOR hDragCursor;
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HCURSOR hNewDragCursor;
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POINT Point;
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BOOL fContinueDrag;
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MSG Msg;
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MSG PeekMsg;
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HTREEITEM hCurrentDropTreeItem = NULL;
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GetWindowRect(g_RegEditData.hKeyTreeWnd, &CurrentDropRect);
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GetCursorPos(&Point);
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Point.x -= CurrentDropRect.left;
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Point.y -= CurrentDropRect.top;
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if (hDragImageList != NULL) {
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if ( ImageList_BeginDrag(hDragImageList, 0, HotSpotPoint.x, HotSpotPoint.y) ) {
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ImageList_DragEnter(g_RegEditData.hKeyTreeWnd, Point.x, Point.y );
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}
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}
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s_RegDragData.hLockWnd = g_RegEditData.hKeyTreeWnd;
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LockWindowUpdate(s_RegDragData.hLockWnd);
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if (hDragImageList != NULL) {
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ShowCursor(FALSE);
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ImageList_DragShowNolock(TRUE);
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}
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else {
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s_RegDragData.HotSpotPoint = HotSpotPoint;
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s_RegDragData.pDragRectArray = pDragRectArray;
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s_RegDragData.DragRectCount = DragRectCount;
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s_RegDragData.DragRectPoint = Point;
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DrawDragRects();
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}
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hDropCursor = LoadCursor(NULL, IDC_ARROW);
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hDragCursor = hDropCursor;
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hNoDropCursor = LoadCursor(NULL, IDC_NO);
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SetCapture(hWnd);
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fContinueDrag = TRUE;
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while (fContinueDrag && GetMessage(&Msg, NULL, 0, 0)) {
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switch (Msg.message) {
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case WM_MOUSEMOVE:
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//
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// If we have another WM_MOUSEMOVE message in the queue
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// (before any other mouse message), don't process this
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// mouse message.
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//
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if (PeekMessage(&PeekMsg, NULL, WM_MOUSEFIRST, WM_MOUSELAST,
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PM_NOREMOVE) && PeekMsg.message == WM_MOUSEMOVE)
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break;
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if (!PtInRect(&CurrentDropRect, Msg.pt)) {
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hNewDragCursor = hNoDropCursor;
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}
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else {
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hNewDragCursor = hDropCursor;
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}
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if (hNewDragCursor != hDragCursor) {
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if (hDragImageList != NULL) {
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if (hNewDragCursor == hDropCursor) {
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ImageList_DragShowNolock(TRUE);
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ShowCursor(FALSE);
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}
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else {
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ImageList_DragShowNolock(FALSE);
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ShowCursor(TRUE);
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SetCursor(hNewDragCursor);
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}
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}
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else
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SetCursor(hNewDragCursor);
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hDragCursor = hNewDragCursor;
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}
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Msg.pt.x -= CurrentDropRect.left;
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Msg.pt.y -= CurrentDropRect.top;
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{
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TV_HITTESTINFO TVHitTestInfo;
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HTREEITEM hTreeItem;
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TVHitTestInfo.pt = Msg.pt;
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hTreeItem = TreeView_HitTest(g_RegEditData.hKeyTreeWnd, &TVHitTestInfo);
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if (hTreeItem != hCurrentDropTreeItem) {
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ImageList_DragShowNolock(FALSE);
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// DbgPrintf(("Got a drop target!!!\n"));
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// SetWindowRedraw(g_RegEditData.hKeyTreeWnd, FALSE);
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TreeView_SelectDropTarget(g_RegEditData.hKeyTreeWnd, hTreeItem);
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// SetWindowRedraw(g_RegEditData.hKeyTreeWnd, TRUE);
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hCurrentDropTreeItem = hTreeItem;
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ImageList_DragShowNolock(TRUE);
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}
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}
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if (hDragImageList != NULL)
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ImageList_DragMove(Msg.pt.x, Msg.pt.y);
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else {
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DrawDragRects();
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s_RegDragData.DragRectPoint = Msg.pt;
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DrawDragRects();
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}
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break;
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case WM_KEYDOWN:
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if (Msg.wParam != VK_ESCAPE)
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break;
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// FALL THROUGH
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case WM_LBUTTONDOWN:
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case WM_RBUTTONDOWN:
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fContinueDrag = FALSE;
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break;
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case WM_LBUTTONUP:
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case WM_RBUTTONUP:
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fContinueDrag = FALSE;
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break;
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default:
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TranslateMessage(&Msg);
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DispatchMessage(&Msg);
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break;
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}
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}
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ReleaseCapture();
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if (hDragImageList != NULL) {
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ImageList_DragShowNolock(FALSE);
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ImageList_EndDrag();
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if (hDragCursor == hDropCursor)
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ShowCursor(TRUE);
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}
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else
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DrawDragRects();
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LockWindowUpdate(NULL);
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}
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/*******************************************************************************
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*
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* DragDragRects
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*
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* DESCRIPTION:
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*
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* PARAMETERS:
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* (none).
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*
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*******************************************************************************/
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VOID
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PASCAL
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DrawDragRects(
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VOID
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)
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{
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HDC hDC;
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int Index;
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RECT Rect;
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hDC = GetDCEx(s_RegDragData.hLockWnd, NULL, DCX_WINDOW | DCX_CACHE |
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DCX_LOCKWINDOWUPDATE);
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for (Index = s_RegDragData.DragRectCount; Index >= 0; Index--) {
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Rect = s_RegDragData.pDragRectArray[Index];
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OffsetRect(&Rect, s_RegDragData.DragRectPoint.x -
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s_RegDragData.HotSpotPoint.x, s_RegDragData.DragRectPoint.y -
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s_RegDragData.HotSpotPoint.y);
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DrawFocusRect(hDC, &Rect);
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}
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ReleaseDC(s_RegDragData.hLockWnd, hDC);
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}
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