Release 0.4.10
Mon Nov 22 13:58:56 1993 David Metcalfe <david@prism.demon.co.uk>
* [windows/scroll.c]
Preliminary implementations of ScrollWindow, ScrollDC and
ScrollWindowEx.
Nov 21, 93 martin2@trgcorp.solucorp.qc.ca (Martin Ayotte)
* [controls/listbox.c]
Optimization of redraw during 'Add' or 'Insert'.
* [controls/scroll.c]
Optimization of WM_PAINT during 'thumbtracking'.
* [controls/button.c]
Add of beta implement of 'BS_OWNERDRAW'
* [controls/static.c]
Style 'SS_ICON' new supported.
* [misc/message.c]
Begin of implemantation of MB_XXX styles.
* [loader/resource.c]
Function LoadIcon() : now prepare transparency Bitmap mask.
Function LoadCursor() : now prepare a 'X pixmapcursor'.
New function SetCursor() : not finished.
New function ShowCursor() : not finished.
New function AccessResource() : stub.
* [obj/dib.c]
Function DrawIcon(): deugging phase of icon transparency mask.
* [loader/library.c]
new file for news functions LoadLibrary() & FreeLibrary().
* [sysres.dll]
Resources only 16bits DLL for System Resources, icons, etc...
Sun Nov 14 14:39:06 1993 julliard@di.epfl.ch (Alexandre Julliard)
* [include/dialog.h] [windows/dialog.c]
Simplified dialog template parsing.
Implemented DialogBoxIndirect().
* [windows/win.c]
Fixed bug in CreateWindow() when aborting window creation.
Modified UpdateWindow() to only update visible windows.
Implemented IsWindow().
Nov 14, 93 martin2@trgcorp.solucorp.qc.ca (Martin Ayotte)
* [controls/listbox.c]
Listbox control window : new messages.
* [controls/combo.c]
Combo box control window : new messages.
* [misc/message.c]
Moved stub MessageBox() to this new file.
Implemented of a callback, now MessageBox show a window.
* [loader/resource.c]
New function DestroyIcon()
New function DestroyCursor()
Filled stub LoadIcon()
Filled stub LoadCursor()
Bug fixed in FindResourceByName() : missing lseek().
* [obj/dib.c]
New function DrawIcon()
* [windows/win.c]
New function CloseWindow()
New function OpenIcon()
New function IsIconic()
New Function FindWindow()
Sun Nov 14 08:27:19 1993 Karl Guenter Wuensch (hz225wu@unidui.uni-duisburg.de)
* [loader/selector.c]
Wrote AllocCStoDSAlias() and AllocDStoCSAlias()
Sun Nov 14 08:27:19 1993 Bob Amstadt (bob at amscons)
* [loader/selector.c]
Wrote AllocSelector() and PrestoChangoSelector(). YUK!
Sat Nov 13 13:56:42 1993 Bob Amstadt (bob at amscons)
* [loader/resource.c]
Wrote FindResource(), LoadResource(), LockResource(),
and FreeResource()
* [include/segmem.h] [loader/selector.c] [loader/signal.h]
Changed selector allocation method.
Sun Nov 10 08:27:19 1993 Karl Guenter Wuensch (hz225wu@unidui.uni-duisburg.de)
* [if1632/callback.c if1632/call.S if1632/user.spec]
added Catch (KERNEL.55) and Throw (KERNEL.56)
Nov 7, 93 martin2@trgcorp.solucorp.qc.ca (Martin Ayotte)
* [controls/scroll.c]
Scroll bar control window
Bug resolved : Painting message before scroll visible.
* [controls/listbox.c]
Listbox control window
Destroy cleanup.
* [controls/combo.c]
Combo box control window
Destroy cleanup.
* [controls/button.c]
GetCheck Message now return is state.
* [windows/win.c]
New function IsWindowVisible()
diff --git a/windows/scroll.c b/windows/scroll.c
new file mode 100644
index 0000000..34d43fd
--- /dev/null
+++ b/windows/scroll.c
@@ -0,0 +1,171 @@
+/*
+ * Scroll windows and DCs
+ *
+ * Copyright David W. Metcalfe, 1993
+ *
+ */
+
+static char Copyright[] = "Copyright David W. Metcalfe, 1993";
+
+#include <stdlib.h>
+#include "windows.h"
+#include "gdi.h"
+
+static int RgnType;
+
+
+/*************************************************************************
+ * ScrollWindow (USER.61)
+ */
+
+void ScrollWindow(HWND hwnd, short dx, short dy, LPRECT rect, LPRECT clipRect)
+{
+ HDC hdc;
+ HRGN hrgnUpdate;
+ RECT rc, cliprc;
+
+#ifdef DEBUG_SCROLL
+ printf("ScrollWindow: dx=%d, dy=%d, rect=%d,%d,%d,%d\n", dx, dy,
+ rect->left, rect->top, rect->right, rect->bottom);
+#endif
+
+ hdc = GetDC(hwnd);
+
+ if (rect == NULL)
+ GetWindowRect(hwnd, &rc);
+ else
+ CopyRect(&rc, rect);
+ if (clipRect == NULL)
+ GetWindowRect(hwnd, &cliprc);
+ else
+ CopyRect(&cliprc, clipRect);
+
+ hrgnUpdate = CreateRectRgn(0, 0, 0, 0);
+ ScrollDC(hdc, dx, dy, &rc, &cliprc, hrgnUpdate, NULL);
+ InvalidateRgn(hwnd, hrgnUpdate, TRUE);
+ ReleaseDC(hwnd, hdc);
+}
+
+
+/*************************************************************************
+ * ScrollDC (USER.221)
+ */
+
+BOOL ScrollDC(HDC hdc, short dx, short dy, LPRECT rc, LPRECT cliprc,
+ HRGN hrgnUpdate, LPRECT rcUpdate)
+{
+ HRGN hrgnClip, hrgn1, hrgn2;
+ POINT src, dest;
+ short width, height;
+ DC *dc = (DC *)GDI_GetObjPtr(hdc, DC_MAGIC);
+
+#ifdef DEBUG_SCROLL
+ printf("ScrollDC: dx=%d, dy=%d, rc=%d,%d,%d,%d\n", dx, dy,
+ rc->left, rc->top, rc->right, rc->bottom);
+#endif
+
+ if (rc == NULL)
+ return;
+
+ if (cliprc)
+ {
+ hrgnClip = CreateRectRgnIndirect(cliprc);
+ SelectClipRgn(hdc, hrgnClip);
+ }
+
+ if (dx > 0)
+ {
+ src.x = XDPTOLP(dc, rc->left);
+ dest.x = XDPTOLP(dc, rc->left + abs(dx));
+ }
+ else
+ {
+ src.x = XDPTOLP(dc, rc->left + abs(dx));
+ dest.x = XDPTOLP(dc, rc->left);
+ }
+ if (dy > 0)
+ {
+ src.y = YDPTOLP(dc, rc->top);
+ dest.y = YDPTOLP(dc, rc->top + abs(dy));
+ }
+ else
+ {
+ src.y = YDPTOLP(dc, rc->top + abs(dy));
+ dest.y = YDPTOLP(dc, rc->top);
+ }
+
+ width = rc->right - rc->left - abs(dx);
+ height = rc->bottom - rc->top - abs(dy);
+
+ if (!BitBlt(hdc, dest.x, dest.y, width, height, hdc, src.x, src.y,
+ SRCCOPY))
+ return;
+
+ if (hrgnUpdate)
+ {
+ if (dx > 0)
+ hrgn1 = CreateRectRgn(rc->left, rc->top, rc->left+dx, rc->bottom);
+ else if (dx < 0)
+ hrgn1 = CreateRectRgn(rc->right+dx, rc->top, rc->right,
+ rc->bottom);
+ else
+ hrgn1 = CreateRectRgn(0, 0, 0, 0);
+
+ if (dy > 0)
+ hrgn2 = CreateRectRgn(rc->left, rc->top, rc->right, rc->top+dy);
+ else if (dy < 0)
+ hrgn2 = CreateRectRgn(rc->left, rc->bottom+dy, rc->right,
+ rc->bottom);
+ else
+ hrgn2 = CreateRectRgn(0, 0, 0, 0);
+
+ RgnType = CombineRgn(hrgnUpdate, hrgn1, hrgn2, RGN_OR);
+ }
+
+ if (rcUpdate)
+ {
+ SelectClipRgn(hdc, hrgnUpdate);
+ GetClipBox(hdc, rcUpdate);
+ }
+}
+
+
+/*************************************************************************
+ * ScrollWindowEx (USER.319)
+ */
+
+int ScrollWindowEx(HWND hwnd, short dx, short dy, LPRECT rect, LPRECT clipRect,
+ HRGN hrgnUpdate, LPRECT rcUpdate, WORD flags)
+{
+ HDC hdc;
+ RECT rc, cliprc;
+
+#ifdef DEBUG_SCROLL
+ printf("ScrollWindowEx: dx=%d, dy=%d, rect=%d,%d,%d,%d\n", dx, dy,
+ rect->left, rect->top, rect->right, rect->bottom);
+#endif
+
+ hdc = GetDC(hwnd);
+
+ if (rect == NULL)
+ GetWindowRect(hwnd, &rc);
+ else
+ CopyRect(&rc, rect);
+ if (clipRect == NULL)
+ GetWindowRect(hwnd, &cliprc);
+ else
+ CopyRect(&cliprc, clipRect);
+
+ ScrollDC(hdc, dx, dy, &rc, &cliprc, hrgnUpdate, rcUpdate);
+
+ if (flags | SW_INVALIDATE)
+ {
+ InvalidateRgn(hwnd, hrgnUpdate, FALSE);
+
+ if (flags | SW_ERASE)
+ SendMessage(hwnd, WM_ERASEBKGND, (WORD)hdc, (LONG)NULL);
+ }
+
+ ReleaseDC(hwnd, hdc);
+ return RgnType;
+}
