Vc_cdc_drawtext () function usage

Purpose:
Outputs the specified substring in the specified position (rectangle.

Statement:
Int drawtext
(
HDC, // handle to DC
Lptstr lpstring, // text to draw
Int ncount, // text Length
Lprect, // formatting dimensions
Uint uformat // text-drawing options
);

Example:
DC-> drawtext ("test", crect (100,100,200,300), dt_singleline | dt_left | dt_vcenter );

DC is the object pointer of the graphical device environment description.
Other Instructions:
The final parameter format can be a combination of the following:
Bottom alignment of dt_bottom
Dt_calcrect
Horizontal center of dt_center
Dt_end_ellipsis or dt_path_ellipsis
Dt_expandtabs
Dt_externalleading
Dt_modifystring
Dt_noprefix
Dt_path_ellipsis
Align to the right of dt_right
Dt_singleline
Dt_tabstop
Top alignment of dt_top
Vertical center of dt_vcenter
Automatic line feed of dt_wordbreak

FAQs:
Q: Why does dt_vcenter not work when the drawtext function centralizes multiple lines of text in a rectangle?
A: Only single line of text can be centered. You must use the dt_singleline attribute.

Detailed description of Mark Constants
Dt_bottom must specify dt_single at the same time. Indicates text alignment to format the bottom edge of a rectangle
Dt_calcrect
Calculate and format the rectangle as follows: When drawing multiple rows, the bottom side of the rectangle is extended as needed to accommodate all text; when drawing a single row, the right side of the rectangle is extended. Do not depict text. The rectangle specified by the lprect parameter loads the calculated value.

Dt_center text vertical center
When dt_expandtabs depicts text, it expands the tabulation site. By default, the spacing between tabulation sites is 8 characters. However, you can use the dt_tabstop flag to change this setting.

When dt_externalleading is used to calculate the height of a text line, the external spacing attribute (the external
Leading attribute)
Left-aligned dt_left text
The specified rectangle is not cut when dt_noclip depicts the text.
Dt_noprefix is generally used. The function determines that the & character expression should be followed by an underscore. This flag disables such behavior
Right-aligned dt_right text
Dt_singleline draws only one row
Dt_tabstop specifies the distance between the new tabulation stations. The height of this integer is 8 bits.
Dt_top must specify dt_single at the same time. Indicates text alignment to the top of the formatted rectangle
Dt_vcenter must specify dt_single at the same time. Indicates text alignment to the center of the formatted rectangle
Dt_wordbreak for automatic line feed. If you use the settextalign function to set the ta_updatecp flag, this setting is invalid.