KEYDOWNDATA
This structure holds records which represent a key-down event. This
structure is retrieved via PEvget and the PEP_structKEYDOWNDATA property when
a PEWN_KEYDOWN notification event is being
processed.
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typedef struct tagKEYDOWNDATA
{
UINT
nChar;
UINT
nRepCnt;
UINT
nFlags;
} KEYDOWNDATA;
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Parameter |
Description |
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nChar |
Specifies the virtual-key code of the given
key. |
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nRepCnt |
Repeat count (the number of times the keystroke
is repeated as a result of the user holding down the key). |
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nFlags |
Specifies the scan code, key-transition code,
previous key state, and context code, as shown in the following list: |
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Value |
Description |
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0-7 |
Scan code (OEM-dependent value). |
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8 |
Extended key, such as a function key or a
key on the numeric keypad (1 if it is an extended key). |
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9-10 |
Not used. |
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11-12 |
Used internally by Windows. |
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13 |
Context code (1 if the ALT key is held down
while the key is pressed; otherwise 0). |
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14 |
Previous key state (1 if the key is down
before the call, 0 if the key is up). |
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15 |
Transition state (1 if the key is being released,
0 if the key is being pressed). |
For a WM_KEYDOWN message, the key-transition bit (bit 15) is 0 and the
context-code bit (bit 13) is 0.
Comments
See Also: PEP_structKEYDOWNDATA.
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