problem with hook ExtTextOutA / W

piggy_tang

Why are some parts of the same drawgrid hookable but not others
For example: I can commit against Zasar 12322adsdsadas. I can commit it immediately. 12345678
"12345678" cannot be extracted.

firemars

What is it used for?

Global mouse hooks?

wudi180

. . . . The landlord was too esoteric. For example: I can commit against Zasar 12322adsdsadas. I can commit it immediately. 12345678
What is this?

piggy_tang

Is the global hook in the dll.

firemars

I don't understand how it is possible to get 12322 without it. . .

firemars

I tried it with my program, no problem.

Never encountered it.

jolin1981330

Help you

felix3325

This is the function declaration, BOOL ExtTextOut (
  HDC hdc, // handle to device context
  int X, // x-coordinate of reference point
  int Y, // y-coordinate of reference point
  UINT fuOptions, // text-output options
  CONST RECT * lprc, // optional clipping and / or opaquing rectangle
  LPCTSTR lpString, // points to string
  UINT cbCount, // number of characters in string
  CONST INT * lpDx // pointer to array of intercharacter spacing
                    // values
);
Note: Is lpString a wide character, is cbCount correct, and is lprc large enough?

yellowball

It is estimated that the problem is upstairs. In fact, it is easy to see why the buffer is dropped by looking at the buffer.

piggy_tang

tofelix3325
Note: Is lpString a wide character, is cbCount correct, and is lprc large enough?

I hooked exttextoutA and exttextoutW respectively
lpString contains two types, single-byte and double-byte
cbcount can't get value in hook function
No problem with the scope of lprc
But if the function being hooked is blocked, the characters that cannot be hooked are not displayed.