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Diffstat (limited to 'mousew16.c')
-rw-r--r--mousew16.c135
1 files changed, 118 insertions, 17 deletions
diff --git a/mousew16.c b/mousew16.c
index dcfb82e..cc6d2da 100644
--- a/mousew16.c
+++ b/mousew16.c
@@ -31,7 +31,12 @@
#define USE_WHEEL 1
/** Verbosely log events as they happen. */
#define TRACE_EVENTS 0
+/** Verbosely trace scroll wheel code. */
+#define TRACE_WHEEL 0
+/** Number of lines to scroll per wheel event. */
+#define WHEEL_SCROLL_LINES 2
+/** Windows 3.x only supports 1-2 mouse buttons anyway. */
#define MOUSE_NUM_BUTTONS 2
/** The routine Windows gave us which we should use to report events. */
@@ -57,7 +62,9 @@ static struct {
HWND WINAPI (*WindowFromPoint)( POINT );
HWND WINAPI (*GetParent)( HWND );
int WINAPI (*GetClassName)( HWND, LPSTR, int );
+ int WINAPI (*GetWindowText)( HWND, LPSTR, int );
LONG WINAPI (*GetWindowLong)( HWND, int );
+ BOOL WINAPI (*IsWindowEnabled)( HWND );
BOOL WINAPI (*EnumChildWindows)( HWND, WNDENUMPROC, LPARAM );
BOOL WINAPI (*PostMessage)( HWND, UINT, WPARAM, LPARAM );
} userapi;
@@ -77,31 +84,80 @@ static void send_event(unsigned short Status, short deltaX, short deltaY, short
#if USE_WHEEL
typedef struct {
+ /** Input: whether to find vertical scrollbars. */
+ BOOL vertical;
+ /** Output: found scrollbar handle, or 0. */
HWND scrollbar;
} FINDSCROLLBARDATA, FAR * LPFINDSCROLLBARDATA;
+#define ENUM_CHILD_WINDOW_CONTINUE TRUE
+#define ENUM_CHILD_WINDOW_STOP FALSE
+
+#if TRACE_WHEEL
+static void print_window_name(HWND hWnd)
+{
+ char buffer[32];
+ if (userapi.GetWindowText(hWnd, buffer, sizeof(buffer)) > 0) {
+ dprintf("w16mouse: hWnd=0x%x name=%s\n", hWnd, buffer);
+ }
+}
+#endif
+
static BOOL CALLBACK __loadds find_scrollbar(HWND hWnd, LPARAM lParam)
{
LPFINDSCROLLBARDATA data = (LPFINDSCROLLBARDATA) lParam;
char buffer[16];
- userapi.GetClassName(hWnd, &buffer, sizeof(buffer));
+#if TRACE_WHEEL
+ print_window_name(hWnd);
+#endif
+
+ if (!userapi.IsWindowEnabled(hWnd)) {
+ return ENUM_CHILD_WINDOW_CONTINUE;
+ }
+
+ if (userapi.GetClassName(hWnd, buffer, sizeof(buffer)) == 0) {
+ return ENUM_CHILD_WINDOW_CONTINUE;
+ }
if (_fstrcmp(buffer, "ScrollBar") == 0) {
- data->scrollbar = hWnd;
- return FALSE;
+ LONG style = userapi.GetWindowLong(hWnd, GWL_STYLE);
+
+ if (data->vertical && (style & SBS_VERT)) {
+ data->scrollbar = hWnd;
+ return ENUM_CHILD_WINDOW_STOP;
+ } else if (!data->vertical && !(style & SBS_VERT)) {
+ data->scrollbar = hWnd;
+ return ENUM_CHILD_WINDOW_STOP;
+ }
}
- return TRUE;
+ return ENUM_CHILD_WINDOW_CONTINUE;
+}
+
+static void post_scroll_msg(HWND hWnd, BOOL vertical, int z, HWND hScrollBar)
+{
+ UINT msg = vertical ? WM_VSCROLL : WM_HSCROLL;
+ WPARAM wParam = z < 0 ? SB_LINEUP : SB_LINEDOWN;
+ LPARAM lParam = MAKELPARAM(0, hScrollBar);
+ UINT i, lines = (z < 0 ? -z : z) * WHEEL_SCROLL_LINES;
+
+#if TRACE_WHEEL
+ dprintf("w16mouse: sending scroll msg to hWnd=0x%x from=0x%x vert=%d lines=%u\n", hWnd, hScrollBar, vertical, lines);
+#endif
+
+ for (i = 0; i < lines; i++) {
+ userapi.PostMessage(hWnd, msg, wParam, lParam);
+ }
+ userapi.PostMessage(hWnd, msg, SB_ENDSCROLL, lParam);
}
static void send_wheel_movement(int8_t z)
{
POINT point;
HWND hWnd;
- WPARAM wParam;
-#if TRACE_EVENTS
+#if TRACE_WHEEL
dprintf("w16mouse: wheel=%d\n", z);
#endif
@@ -111,40 +167,79 @@ static void send_wheel_movement(int8_t z)
userapi.GetCursorPos(&point);
+#if TRACE_WHEEL
+ dprintf("w16mouse: getcursorpos OK\n");
+#endif
+
hWnd = userapi.WindowFromPoint(point);
+#if TRACE_WHEEL
+ dprintf("w16mouse: initial hWnd=0x%x\n", hWnd);
+#endif
+
while (hWnd) {
LONG style = userapi.GetWindowLong(hWnd, GWL_STYLE);
+#if TRACE_WHEEL
+ print_window_name(hWnd);
+ dprintf("w16mouse: hWnd=0x%x style=0x%lx\n", hWnd, style);
+#endif
+
if (style & WS_VSCROLL) {
- wParam = z < 0 ? SB_LINEUP : SB_LINEDOWN;
- userapi.PostMessage(hWnd, WM_VSCROLL, wParam, 0);
+#if TRACE_WHEEL
+ dprintf("w16mouse: found WS_VSCROLL\n");
+#endif
+ post_scroll_msg(hWnd, TRUE, z, 0);
break;
} else if (style & WS_HSCROLL) {
- wParam = z < 0 ? SB_LINELEFT : SB_LINERIGHT;
- userapi.PostMessage(hWnd, WM_HSCROLL, wParam, 0);
+#if TRACE_WHEEL
+ dprintf("w16mouse: found WS_HSCROLL\n");
+#endif
+ post_scroll_msg(hWnd, FALSE, z, 0);
break;
} else {
- FINDSCROLLBARDATA data = {0};
+ FINDSCROLLBARDATA data;
- // Let's check if we can find a scroll bar in this window..
+ // Let's check if we can find a vertical scroll bar in this window..
+#if TRACE_WHEEL
+ dprintf("w16mouse: find vertical scrollbar...\n");
+#endif
+ data.vertical = TRUE;
+ data.scrollbar = 0;
userapi.EnumChildWindows(hWnd, find_scrollbar, (LONG) (LPVOID) &data);
if (data.scrollbar) {
- // Assume vertical scrolling
- wParam = z < 0 ? SB_LINEUP : SB_LINEDOWN;
- userapi.PostMessage(hWnd, WM_VSCROLL, wParam, 0);
+ post_scroll_msg(hWnd, TRUE, z, data.scrollbar);
break;
}
+ // Try a horizontal scrollbar now
+#if TRACE_WHEEL
+ dprintf("w16mouse: find horizontal scrollbar...\n");
+#endif
+ data.vertical = FALSE;
+ data.scrollbar = 0;
+ userapi.EnumChildWindows(hWnd, find_scrollbar, (LONG) (LPVOID) &data);
+ if (data.scrollbar) {
+ post_scroll_msg(hWnd, FALSE, z, data.scrollbar);
+ break;
+ }
+
+ // Otherwise, try again on the parent window
if (style & WS_CHILD) {
- // Otherwise try again with a parent window
+#if TRACE_WHEEL
+ dprintf("w16mouse: go into parent...\n");
+#endif
hWnd = userapi.GetParent(hWnd);
} else {
- // This was already a topmost
+ // This was already a topmost window
break;
}
}
}
+
+#if TRACE_WHEEL
+ dprintf("w16mouse: wheel end\n");
+#endif
}
#endif /* USE_WHEEL */
@@ -200,6 +295,10 @@ static void FAR int33_mouse_callback(uint16_t events, uint16_t buttons, int16_t
// Unused
(void) buttons;
+ if ((status & ~SF_ABSOLUTE) == 0) {
+ return; // Nothing to post
+ }
+
#if TRACE_EVENTS
dprintf("w16mouse: post status=0x%x ", status);
if (status & SF_ABSOLUTE) {
@@ -271,7 +370,9 @@ VOID FAR PASCAL Enable(LPFN_MOUSEEVENT lpEventProc)
userapi.WindowFromPoint = (LPVOID) GetProcAddress(userapi.hUser, "WindowFromPoint");
userapi.GetParent = (LPVOID) GetProcAddress(userapi.hUser, "GetParent");
userapi.GetClassName = (LPVOID) GetProcAddress(userapi.hUser, "GetClassName");
+ userapi.GetWindowText = (LPVOID) GetProcAddress(userapi.hUser, "GetWindowText");
userapi.GetWindowLong = (LPVOID) GetProcAddress(userapi.hUser, "GetWindowLong");
+ userapi.IsWindowEnabled = (LPVOID) GetProcAddress(userapi.hUser, "IsWindowEnabled");
userapi.EnumChildWindows = (LPVOID) GetProcAddress(userapi.hUser, "EnumChildWindows");
userapi.PostMessage = (LPVOID) GetProcAddress(userapi.hUser, "PostMessage");
}
generated by cgit v1.2.3 (git 2.25.1) at 2024-11-28 10:10:57 +0000