53 lines
1.6 KiB
Plaintext
53 lines
1.6 KiB
Plaintext
/*
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* Demonstrates a conhost hang that occurs when widening the console buffer
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* while selection is in progress. The problem affects the new Windows 10
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* console, not the "legacy" console mode that Windows 10 also includes.
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*
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* First tested with:
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* - Windows 10.0.10240
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* - conhost.exe version 10.0.10240.16384
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* - ConhostV1.dll version 10.0.10240.16384
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* - ConhostV2.dll version 10.0.10240.16391
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*/
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#include <windows.h>
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#include <stdio.h>
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#include <stdlib.h>
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#include <wchar.h>
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#include "TestUtil.cc"
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const int SC_CONSOLE_MARK = 0xFFF2;
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const int SC_CONSOLE_SELECT_ALL = 0xFFF5;
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int main(int argc, char *argv[]) {
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if (argc == 1) {
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startChildProcess(L"CHILD");
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return 0;
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}
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setWindowPos(0, 0, 1, 1);
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setBufferSize(80, 25);
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setWindowPos(0, 0, 80, 25);
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countDown(5);
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SendMessage(GetConsoleWindow(), WM_SYSCOMMAND, SC_CONSOLE_SELECT_ALL, 0);
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Sleep(2000);
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// This API call does not return. In the console window, the "Select All"
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// operation appears to end. The console window becomes non-responsive,
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// and the conhost.exe process must be killed from the Task Manager.
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// (Killing this test program or closing the console window is not
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// sufficient.)
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//
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// The same hang occurs whether line resizing is off or on. It happens
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// with both "Mark" and "Select All". Calling setBufferSize with the
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// existing buffer size does not hang, but calling it with only a changed
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// buffer height *does* hang. Calling setWindowPos does not hang.
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setBufferSize(120, 25);
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printf("Done...\n");
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Sleep(2000);
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}
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