D3D 里怎么得到字符的宽度啊

Chiyer

还了DX SDK 的 UI 例子，里面有个函数

_ScriptStringXtoCP

能通过当前鼠标的位置得到所选中字符串中的哪一个字符


到这个函数再也找不到在那里实现的


其实，偶想知道，在 D3D里如何得到 绘制的字符所占的宽度（屏幕坐标）

lingjingqiu

ScriptStringXtoCP
The ScriptStringXtoCP function converts an x-coordinate to a character position.

HRESULT WINAPI ScriptStringXtoCP(
  SCRIPT_STRING_ANALYSIS  ssa,
  int iX,
  int *piCh,
  int *piTrailing
);
Parameters
ssa
[in] A SCRIPT_STRING_ANALYSIS structure for the string.
iX
[in] Specifies the x coordinate.
piCh
[out] Pointer to a variable that receives the character position corresponding to iX.
piTrailing
[out] Pointer to a variable that receives an indicator whether the position is the leading or trailing edge of the character.
Return Values
If the function is successful, it returns S_OK.

If the function fails, it returns an HRESULT.

The return value can be tested with the SUCCEEDED and FAILED macros.

Requirements
  Windows NT/2000/XP: Included in Windows 2000 and later.
  Redistributable: Requires Internet Explorer 5 or later on Windows 95/98/Me.
  Header: Declared in Usp10.h.
  Library: Use Usp10.lib.

Miros

RECT rect = {0, 0, 0,0};
ID3DXFont:rawTextW(NULL, "哈哈", 2, &rect, DT_CALCRECT, 0xffffffff);
return rect.Right - rect.Left;

Chiyer

thanks lingjingqiu 没向导是API

：）

coldeye

@_@ 跟d3d 没关系呀

这跟向量字形有关
主要是GetCharABCWidths
关键在ABC结构