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InputTextMultiline: fixed a crash when using ImGuiInputTextFlags_WordWrap and resizing the parent window while keeping the multi-line field active. (#9007, #3237)

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ocornut 2025-10-15 19:12:40 +02:00
parent d7fec5e1d3
commit 2a5e9a15e4
2 changed files with 10 additions and 1 deletions
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4
docs/CHANGELOG.txt
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@ -47,6 +47,10 @@ Other Changes:
result in temporarily incorrect state, which would lead to bugs to side effects
in various locations, e.g. GetContentRegionAvail() calls or using clipper. (#9005)
EndTable() was mistakenly restoring a wrong current table.
- InputTextMultiline: fixed a crash when using ImGuiInputTextFlags_WordWrap and
resizing the parent window while keeping the multi-line field active (which is
most typically achieved when resizing programmatically or via a docking layout
reacting to a platform window resize). (#3237, #9007) [@anton-kl, @ocornut]
-----------------------------------------------------------------------

7
imgui_widgets.cpp
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@ -5401,7 +5401,12 @@ bool ImGui::InputTextEx(const char* label, const char* hint, char* buf, int buf_
line_index->Offsets.resize(0);
int line_count = 1;
if (is_multiline)
line_count = InputTextLineIndexBuild(flags, line_index, buf_display, buf_display_end, wrap_width, (render_cursor && state && state->CursorFollow) ? INT_MAX : line_visible_n1 + 1, buf_display_end ? NULL : &buf_display_end);
{
// If scrolling is expected to change build full index.
// FIXME-OPT: Could append to index when new value of line_visible_n1 becomes bigger, see second call to CalcClipRectVisibleItemsY() below.
bool will_scroll_y = state && ((state->CursorFollow && render_cursor) || (state->CursorCenterY && (render_cursor || render_selection)));
line_count = InputTextLineIndexBuild(flags, line_index, buf_display, buf_display_end, wrap_width, will_scroll_y ? INT_MAX : line_visible_n1 + 1, buf_display_end ? NULL : &buf_display_end);
}
line_index->EndOffset = (int)(buf_display_end - buf_display);
line_visible_n1 = ImMin(line_visible_n1, line_count);