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-rw-r--r--src/plugins/platforms/windows/uiautomation/qwindowsuiatextrangeprovider.cpp8
1 files changed, 4 insertions, 4 deletions
diff --git a/src/plugins/platforms/windows/uiautomation/qwindowsuiatextrangeprovider.cpp b/src/plugins/platforms/windows/uiautomation/qwindowsuiatextrangeprovider.cpp
index 9e46ffd5eb..a62a33cfe2 100644
--- a/src/plugins/platforms/windows/uiautomation/qwindowsuiatextrangeprovider.cpp
+++ b/src/plugins/platforms/windows/uiautomation/qwindowsuiatextrangeprovider.cpp
@@ -316,14 +316,14 @@ HRESULT QWindowsUiaTextRangeProvider::Move(TextUnit unit, int count, int *pRetVa
int len = textInterface->characterCount();
- if (len < 1)
+ if (len < 1 || count == 0) // MSDN: "Zero has no effect."
return S_OK;
if (unit == TextUnit_Character) {
// Moves the start point, ensuring it lies within the bounds.
- int start = qBound(0, m_startOffset + count, len - 1);
+ int start = qBound(0, m_startOffset + count, len);
// If range was initially empty, leaves it as is; otherwise, normalizes it to one char.
- m_endOffset = (m_endOffset > m_startOffset) ? start + 1 : start;
+ m_endOffset = (m_endOffset > m_startOffset) ? qMin(start + 1, len) : start;
*pRetVal = start - m_startOffset; // Returns the actually moved distance.
m_startOffset = start;
} else {
@@ -394,7 +394,7 @@ HRESULT QWindowsUiaTextRangeProvider::MoveEndpointByUnit(TextPatternRangeEndpoin
if (unit == TextUnit_Character) {
if (endpoint == TextPatternRangeEndpoint_Start) {
- int boundedValue = qBound(0, m_startOffset + count, len - 1);
+ int boundedValue = qBound(0, m_startOffset + count, len);
*pRetVal = boundedValue - m_startOffset;
m_startOffset = boundedValue;
m_endOffset = qBound(m_startOffset, m_endOffset, len);