Form when selecting a photo, at the same time, save the table kc_tbcpjfds_lines_image (photos) per volume table kc_tbcpjfds_lines. At the same time bl_pic_flag (0 said any photo, no photo, 1, there are photos)
Form

Refresh_pic () the function content is as follows:


The photo control is in DW_1,
Question: how do I read every time is less than photos, read to the local C "\ TEMP. BMP file is always 0 KB, don't know if there is wrong"

CodePudding user response:

Solve the problem of window button pictures show lost:

//* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * the begin * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

Step 1. Global variables are defined:
String gs_directory

Step 2. Add the code in the application of open event:
Gs_directory=GetCurrentDirectory ()//saves the current directory

Step 3. In a window with missing images of active event to add code (if inherited window, simply add) to the parent window:

//determine whether the current directory changes
If GetCurrentDirectory () & lt;> Gs_directory then
ChangeDirectory (gs_directory)//if changed will be back in the current directory to
End the if

//* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *
//[explain]
//images stored in the application directory,
//control on images with relative path commonly given and point to the application directory.
//programs run started in the current directory is changeless, therefore control according to the relative path to find images;
//after the program is run for some reason the current directory is changed,
//so control according to the changed after the relative path of the current directory to find pictures, so images show lost.
//* * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * end * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * * *

CodePudding user response:

That's not what I tried

CodePudding user response:

You can't write die c: \ temp. BMP ah, you now is to combine multiple images into temp constant cycle. BMP, say when you save a picture, not necessarily all the BMP format,

CodePudding user response:

Add me QQ1919561306 ah

CodePudding user response:

See if the field in the database have value, is never kept success, written code also has a problem, should judge sqlcode updateblob behind and not commit after the judgment, if in after a commit, is whether the commit to submit a success

If successfully saved, look at the selectblob whether to value, need to single-step tracking, find the crux of the problem